fast

詞型變化：

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英文解釋：

名詞 fast:

1. abstaining from food
   同義詞：fasting

動詞 fast:

1. abstain from certain foods, as for religious or medical reasons
2. abstain from eating

形容詞 fast:

1. acting or moving or capable of acting or moving quickly
2. (used of timepieces) indicating a time ahead of or later than the correct time
3. at a rapid tempo
4. (of surfaces) conducive to rapid speeds
5. firmly fastened or secured against opening
   同義詞：barred, bolted, latched, locked, secured
6. resistant to destruction or fading
7. unrestrained by convention or morality
   同義詞：debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous
8. hurried and brief
   同義詞：flying, quick
9. securely fixed in place
   同義詞：firm, immobile
10. unwavering in devotion to friend or vow or cause
    同義詞：firm, loyal, truehearted

副詞 fast:

1. quickly or rapidly (often used as a combining form)
2. firmly or tightly
   同義詞：tight

中英例句：

1. They run faster and faster.
   他們跑得越來越快。
2. I like fast music.
   我喜歡節奏快的音樂。