clenching

n.磨牙癖；紧握

动词clench的现在分词形式.

Don't approach life by clenching your fists. 不要用紧握拳头的方法来靠近生命。

Instead of clenching my fist at new assignments, I will face them with joy and courage. 不是紧握拳头痛苦地对待新的挑战，而是用欢乐和勇气应付困难。