plumb

• 过时的形容词，意为“完全垂直的”或“完美的”；也非正式地表示“完全的”或“绝对的”。

An archaic adjective meaning 'completely vertical' or 'downright'; also used informally to mean 'utter' or 'absolute'.

1. Exactly verticalB2formal

   Perfectly straight up and down; perpendicular to the horizon.

   垂直的

   • The wall must be plumb before we install the cabinets.
   • The carpenter checked that the post was plumb with a level.
   • The tower is not perfectly plumb after the earthquake.

   同义词erectperpendicularuprightvertical

   反义词askewcrookedflathorizontallevelslanted

• 副词，表示“正好”、“完全”或“垂直地”。常用于非正式场合加强语气，如“完全疯了”或“正好在中间”。

An adverb meaning 'exactly,' 'completely,' or 'vertically.' It is often used informally for emphasis, as in 'plumb crazy' or 'plumb in the middle.'

1. Completely or absolutelyB2informalamerican

   Used as an intensifier to mean entirely or absolutely.

   完全地

   • He plumb forgot about the appointment.
   • She was plumb exhausted after the long hike.
   • The idea is plumb crazy, but it might work.

   同义词absolutelycompletelydownrightentirelyquitetotallyutterlywholly

2. Vertically straightC1formal

   In a direction that is exactly vertical, as determined by a plumb line.

   垂直地

   • The wall must be built plumb to ensure stability.
   • The carpenter checked that the post was standing plumb.
   • The tower leans slightly and is not perfectly plumb.

   同义词perpendicularlyvertically

   反义词aslantdiagonallyhorizontallyobliquely

3. B2informalamerican

   Used to mean exactly or precisely in position or time.

   正好

   • The arrow landed plumb in the center of the target.
   • He sat down plumb in the middle of the sofa.
   • The answer hit plumb on the mark.

   同义词deadexactlyjustpreciselyrightsquarely

• 指系在铅垂线上的一种金属重锤或铅锤，用于建筑施工和测量中以确定垂直方向或检查铅直度。

A noun referring to the metal weight or bob attached to a plumb line, used in construction and surveying to determine vertical alignment.

1. Plumb bobC1formal

   A small, heavy object, typically made of lead, attached to a line and used to determine vertical alignment or depth.

   铅垂

   • The carpenter used a plumb to ensure the wall was perfectly vertical.
   • He dropped the plumb into the well to measure its depth.
   • The plumb swung gently as he checked the alignment of the post.

   同义词bobplumb bobplummet

• 动词，指测量或探测某物的深度，也指深入探究或透彻理解复杂的事物。

A verb used to indicate the act of measuring or exploring the depth of something, or understanding a complex subject thoroughly.

1. Measure depthC1formalscientific

   To measure the depth of a body of water, typically with a weighted line.

   测量深度

   • The sailors plumbed the depth of the river before crossing.
   • They used a long rope to plumb the well.
   • The oceanographer plumbed the trench to record its exact depth.

   同义词fathomgaugeprobesound

2. Weight with leadC2formaltechnical

   To weight something with lead, often to make it sink or to stabilize it.

   用铅加重

   • The fisherman plumbed his net with lead weights.
   • They plumbed the diving bell to ensure it would sink properly.
   • The curtain was plumbed at the bottom to hang straight.

   同义词ballastleadweight

3. Examine thoroughlyC1formal

   To explore or investigate something in great depth and detail.

   深入探究

   • The detective plumbed the depths of the suspect's alibi.
   • She plumbed the archives for any mention of the ancient ritual.
   • The journalist plumbed the complexities of the political scandal.

   同义词delveexplorefathominvestigateprobescrutinizesearchsound

   反义词glancescanskim

4. Make verticalC2formaltechnical

   To adjust or align something so that it is perfectly vertical, using a plumb line.

   使垂直

   • The carpenter plumbed the wall before installing the cabinets.
   • He plumbed the post to ensure it was straight.
   • The mason plumbed the brickwork as he built the chimney.

   同义词alignerecttrue