through

• 在某些语境中作形容词，表示连续的、不缩减的，或从一端延伸到另一端的（如“直达列车”或“贯通孔”）。

Occasionally used as an adjective in specific contexts (e.g., a "through‑train" or "through‑passage") to mean continuous, unbroken, or extending from one end to the other.

1. Continuing without interruptionB2formal

   Describing something that runs from one point to another without stopping or changing, often used for transport, services or tickets.

   直达的

   • The through train departs at 6 am and goes directly to the city center.
   • She bought a through ticket that lets her travel across all the states without buying a new ticket.
   • The airline offers a through service from New York to Tokyo with no layover.
   • His through membership gives him access to all the facilities for the whole year.

   同义词continuousdirectnonstopuninterrupted

2. Having a hole or opening that allows passageC1formalbritishtechnical

   Used to describe an object that is pierced or open throughout its length, enabling something to pass through it.

   有孔或开口可穿过的

   • The mechanic installed a through bolt to join the two metal plates.
   • A through pipe is required for the water to flow from the reservoir to the garden.
   • The engineer specified a through hole in the chassis for the wiring harness.
   • The design uses a through slot so the cable can be easily routed.

   同义词openpassableperforatedpierced

   反义词blockedclosedimperforatesealedsolid

• 从一端到另一端；穿过，贯通；从头到尾，自始至终；表示动作贯穿或完成。

An adverb meaning 'from one side to the other', 'completely', or indicating that something has been done or passed through. It is used after a verb to describe movement across a space or the thoroughness of an action.

1. From one side to the otherA1formal

   Moving from one side or end of something to the opposite side; across the interior of a place or object.

   从一边到另一边

   • She walked through the park to get to the library.
   • The light shone through the window.
   • The hikers trekked through the forest before dusk.

   同义词across

2. Finished; no longer continuingA2informal

   Used to indicate that an activity, situation, or state has been completed or ended.

   结束；不再继续

   • We are through with the exam period.
   • I'm through with that TV series; it got boring.
   • After the argument, they're finally through with each other.

   同义词completeconcludeddoneendedfinishedoverterminated

3. During the entire period ofB2informal

   Used to mean ‘during the whole time of’ an event or process.

   在整个…期间

   • He was awake through the night.
   • They stayed together through thick and thin.
   • The store stayed open through the holiday rush.

   同义词duringoverthroughout

• 介词，表示穿过某物内部、通过某种媒介或方式、经历一段时间、完成某事的过程，或遍布某区域。

A preposition indicating movement from one end or side to another within something, passage via an opening or barrier, continuation during a period, means or agency, completion of a process, or presence in every part of an area.

1. Movement within and out of an enclosed spaceA2formal

   Used to show movement from one end or side of something to the other while being inside it, such as a tunnel, forest, crowd, or building.

   穿过，通过

   • We walked through the forest.
   • The train goes through a long tunnel.
   • She pushed her way through the crowd.
   • Light streamed through the window.

2. Passage via an opening or barrierB1formal

   Indicates entering and exiting via an aperture, gap, or obstacle, emphasizing the point of entry and exit rather than the space in between.

   通过，穿过，经过

   • He climbed through the window.
   • Water flowed through the pipe.
   • The key turned smoothly through the lock.
   • She peeked through the curtains.

3. Continuation during an entire periodB1formal

   Used to indicate that an action, state, or event continues from the beginning to the end of a specified time period without interruption.

   贯穿、整个期间

   • It rained through the night.
   • She worked through her lunch break.
   • He slept through the entire movie.
   • The shop is open through Sunday.

4. By means of or via an agent or methodB2formal

   Used to show the method, instrument, person, or system by which something is achieved, communicated, or accomplished.

   通过，借助，凭借

   • I booked the tickets through a travel agent.
   • We learned about the event through social media.
   • She succeeded through hard work and determination.
   • The news spread through word of mouth.

5. From start to finish of an activity or processB1formal

   Indicates that someone experiences, completes, or endures an activity, procedure, or situation from its beginning to its conclusion.

   从头到尾，自始至终

   • I've read through the report.
   • She talked me through the procedure.
   • He slept through the alarm.
   • We're halfway through the project.

6. Presence in every part of an area or groupB2formal

   Used to indicate that something exists, occurs, or is distributed in all parts of a place, organization, or community.

   遍及，贯穿，整个

   • The disease spread through the population.
   • There was excitement through the whole school.
   • Rumours circulated through the office.
   • A sense of calm spread through the room.