quaking
v. （因恐惧或紧张）发抖；震动（quake 的现在分词）
adj. （沼泽或流沙）不稳固的
例句
If you stand up straight, you'll give an impression of self-confidence, even if you're quaking in your boots.
只要你站直了，就会给人一种自信的印象，哪怕你正紧张得发抖。
《柯林斯英汉双解大词典》
Tom, quaking with fear, yielded, and put his eye to the crack.
汤姆吓得发抖，走了过去，贴着裂逢往外看。
I just stood there quaking with fear.
我站在那儿，吓得发抖。
