例句：
You know some birds are not meant to be caged, their feathers are just too bright.
你知道，有些鸟儿是注定不会被关在牢笼里的，它们的每一片羽毛都闪耀着自由的光辉。
高频词：
1. mean (v.) 意思是；目的是...、注定要...
e.g. With musical talent, Cathy is meant to be a musician.
有着音乐天赋，Cathy注定成为一名音乐家。
- means (n.) 方式；手段
e.g. Shark hunt essentially by means of smell.
鲨鱼捕食主要靠嗅觉。
by means of ... 通过...方式
2. cage (n.) 笼子； (v.) 把...关入笼中
(n.) There is a lion in the cage. 有一只狮子在笼子里。
(v.) Zookeeper caged the lion at night.
动物管理员在夜间把狮子关在笼子里。
3. feather (n.) 羽毛
e.g. Feather and shell pictures are about
creating pictures with feathers and shells.
羽毛和贝壳图画是关于用羽毛和贝壳创造出图画。
