碍【ài】
to hinder; to obstruct; to block
[动] 使事物不能顺利进行
妈妈做饭时从不让我在一旁,嫌我碍手碍脚。
While cooking, my mother never allows me to stand by her for fear that I might hinder her.
碍事【ài shì】
be in the way; impede the progress of an affair; be a hindrance
[动短] 1、妨碍做事,造成不方便 2、严重,大有关系
我们应该限制参加这项工程的人数,因为人多反而碍事。
A limit should be put to the number of the people involved in the project, for too many people would become a hindrance.
只是擦破点儿皮,不碍事的。
It doesn't matter because It is just a minor bruise.
安【ān】
1. ease; settle down 2. install 3. quiet; calm; peaceful; tranquil; safe
[动] 1、使平静 2、安装,设置 [形] 3、平静,稳定
只有国家强盛了,人民才能安居乐业。
People can not lead a peaceful and prosperous life unless their country becomes strong.
如今,中国的大部分家庭都安上了电话。
Nowadays, most households in China have telephone sets installed.
科研人员又将一颗卫星平安地送上了太空。
The scientists have succeeded in launching another satellite.