1. fascinate v. 迷住
词义辨析：fascinate, attract, charm, enchant, tempt
fascinate：通常含使人无法拒绝、无法摆脱的意味
attract：普通用词，指客观上吸引人的注意力
charm：侧重迷住某人或使之高兴
enchant：着重指有能力引起被迷住者的欢乐或赞美
tempt：指吸引力很强，强调欲望被唤醒
I'm fascinated by the beauty of Lijiang and Dali.
我被丽江和大理的美景迷住了。
2.feeble a. 虚弱的=weak/faint
feeble current 弱电流
feeble minded adj. 意志薄弱的
His feeble arm dropped powerlessly down.
他那软弱的胳臂没力气地放了下来。
3.flaw n. 缺陷
I can't find a flaw, the painting is perfect!
我找不到任何缺陷，这幅画太完美了！
It was a large diamond, but it had a flaw.
这是颗大钻石，但它有一点瑕疵。
4. fluctuate v. 波动
fluctuate between hopes and fears
徘徊于希望与失望之间，忽喜忽忧
The actual cost may fluctuate above and below that standard.
实际成本可在标准成本的上下范围内增减。
5.formulate v. 构想
formulate criteria 订出标准
He thought it's time to formulate some plan of action.
他认为这是该筹划什么行动计划的时候了。