knack
/næk/noun
in sing.
1- an acquired or natural skill at performing a task技能; 诀窍：
she got the knack of it in the end.
她最终找到了诀窍。
1.1
- a tendency to do something做某事的习惯, 癖：
the band have a knack of warping classic soul songs.
乐队有歪曲经典爵士灵歌的习惯做法。
词源
late Middle English (originally denoting a clever or deceitful trick)： probably related to obsolete knack 'sharp blow or sound', of imitative origin （compare with Dutch knak 'crack, snap'）.