impair
vt.损害，损伤，削弱
The illness had impaired his ability to think and concentrate.
这种疾病损害了他的思维能力和注意力。
impart
vt.告知，透露;赋予，给予
Use a piece of fresh ginger to impart a Far-Eastern flavour to simple ingredients.
用一片鲜姜让简单的原料带有远东的风味。
imperative
a.必要的，紧急的;命令的 n.命令;祈使句
It is imperative that politicians should be good communicators.政治家应该是很好的沟通者，这很重要。
implement
vt.使生效，履行，实施 n.工(器，用)具
We have decided to implement the committee’s recommendations in full .我们已决定全面实施委员会提出的建议。
impose
vt.(on)强加于;征(税等)，处以(罚款等)
The court can impose a fine.法庭可以强制执行罚款。
