(as) happy as a clam

• 很高兴；很快活

(as) happy as a clam的用法和样例：

例句

1. I am happy to accept your invitation.
   我很高兴接受你的邀请。
2. Our friends have a look of cheerfulness.
   我们的朋友看上去很高兴。
3. The children are happy at the school, but they lack discipline.
   孩子们在学校里很快活，但很散漫。
4. She was happy apart from the fact that she could not return home.
   除了不能回家之外，她很快活。