first

• 指在顺序、时间、次序、等级或重要性上位于所有其他事物之前的。

Describing something that comes before all others in sequence, time, order, rank, or importance.

1. Sequence in orderA1formal

   Coming before all others in time, order, or importance.

   第一

   • This is the first chapter of the book.
   • He won the first prize in the competition.
   • She was the first person to arrive.

   同义词chiefforemostinitialleadingpremierprimaryprimeprincipaltop

   反义词finallast

2. Initial or earliestA1formal

   Referring to the earliest stage or beginning of something.

   最初的

   • Her first impression of the city was positive.
   • He made his first attempt at painting last year.
   • The first signs of spring are appearing.

   同义词beginninginitialintroductoryopeningoriginalpremierprimary

   反义词finallastlatestterminal

• 指在顺序、时间或排名中位于最前的；也表示开始、最初或首要的事物。

A noun referring to the beginning or initial part of something, often used in a sequence or ranking.

不可数

1. A1formal

   The person or thing that is at the beginning of a sequence or list.

   首个

   • She was the first to arrive at the party.
   • The first of the month is when rent is due.
   • He finished in first place in the competition.

   同义词alphabeginningbirthcommencementdawngenesisinceptioninitiationonsetopeningoriginoutsetstart

   反义词endlast

2. First gearB1formal

   The lowest gear in a vehicle, used when starting from a stop.

   一挡

   • Put the car in first before you start moving.
   • He shifted into first as the light turned green.
   • The engine stalled because he released the clutch too quickly in first.

   同义词first gearlowlow gear

3. First baseB1formalamericansport

   In baseball, the first of the four bases that a player must touch to score a run.

   一垒

   • The runner was safe at first.
   • He hit a single and made it to first.
   • The throw to first was too late to get the runner out.

   同义词first base

• 基本数词，表示数量一、单个的人或事物；最小的正整数。

The cardinal numeral representing the quantity of a single unit; the first positive integer; the multiplicative identity in arithmetic where any number multiplied by one remains unchanged.

1. Cardinal numeral: the number 1A1formal

   Used to denote a single person or thing; the first positive integer; the quantity representing a single unit in counting, mathematics, and everyday usage. Serves as the multiplicative identity in arithmetic.

   基数词：数字1

   • I have one apple.
   • She is one year old.
   • One plus one equals two.
   • There is only one way to solve this.
   • He scored one goal in the match.