n.磨牙癖；緊握

動(dòng)詞clench的現(xiàn)在分詞形式.

Don't approach life by clenching your fists. 不要用緊握拳頭的方法來(lái)靠近生命。

Instead of clenching my fist at new assignments, I will face them with joy and courage. 不是緊握拳頭痛苦地對(duì)待新的挑戰(zhàn)，而是用歡樂(lè)和勇氣應(yīng)付困難。