a.

1. 快的；迅速的；速度快的
   He is a fast reader.

   他讀書速度很快。

2. 完成得快的
   He did a fast job.

   他很快就幹完了。

3. 牢的；緊的；穩固的
   He kept a fast hold on the rope.

   他緊緊抓牢繩子。

4. （鐘，表）偏快的，快……（時間）的[F]
   My watch is three minutes fast.

   我的表快三分鐘。

5. 【攝】（軟片）易於迅速曝光的；（快門）快速的
6. 允許（或易於）快速行進的[B]
   A fast highway is being built.

   一條高速公路正在修建。

7. 【舊】放蕩的
   He led a fast life.

   他過著放蕩的生活。

8. 不褪色的
   They developed a fast dye.

   他們研製了一種不褪色的染料。

9. 可靠的；忠實的
   They are fast friends.

   他們是摯友。

ad.

1. 快，迅速
   Don't drive so fast.

   別開得這麼快。

2. 緊緊地，牢固地
   Hold fast to this rope, and I will pull you up.

   抓緊繩子，我把你拉上來。

3. 快於標準時間
4. 【舊】靠近著，接近著

vi.

1. 禁食；齋戒

n.

1. 禁食；齋戒[U]

adj.

1. moving or capable of moving at high speed.
   ▸taking place or acting rapidly.
2. (of a clock or watch) showing a time ahead of the correct time.
3. firmly fixed or attached.
   ▸(of friends) close and loyal.
   ▸(of a dye) not fading in light or when washed.
4. Photography  needing only a short exposure.
5. involving or engaging in exciting or shocking activities.

adv.

1. at high speed.
   ▸within a short time.
2. so as to be firmly fixed.
3. so as to be hard to wake:
   fast asleep.

v.

n.