badly; not good

1. 只會向后作用的記憶力可就差勁了。
   It's a poor sort of memory that only work backwards.
2. 這家餐館的服務太差勁，結果我們離開，去了拐彎角上的那一家。
   The service in the restaurant was so poor that we voted with our feet and went to the one round the conner.
3. 一個指揮得差勁的四分衛(wèi)足球員
   A quarterback who called a poor play.
4. 這個表演雜耍在音樂廳舞臺上演得太差勁，因此被觀眾喝了倒彩。
   The juggler put up such a poor show on the music hall stage that he got the bird from the audience.

差的英語翻譯：

勁的英語翻譯：