fast meaning in Chinese
1.紧 (opp. loose)， 牢实的，坚牢的，粘得紧的，坚固的；固定的。
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- I am not getting on very fast with this job .
- He had good eyes and a pair of fast hands .
- Fast neutrons are also captured by nitrogen .
- He started to choke as he was eating too fast .
- Your advice will stick fast in my mind .