Germ layer theory
[医] 胚层学说
🧩 词语组成解析
layer
['leiə]
n. 层，层次;膜;[植]压条;放置者，计划者;
vt. 把…分层堆放;借助压条法;生根繁殖;将（头发）剪成不同层次;
vi. 形成或分成层次;[植]通过压条法而生根;
🗣️ 情景例句
As a matter of fact... I am hungry.
老实说……我饿了。
The poor man wants much,the miser everything.
穷人要求多，财迷则样样都要。
The house has many large rooms and there is a lovely garden.
这栋房子里有许多房间，还有一个漂亮的花园。