Germ-layer
[医] 胚层, 生殖层
🧩 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
I expect that I will be back on Sunday.
我预计星期日回来。
Pick on someone your own size!
不要以大欺小！
I mean powder that is made from fish, blood and bone.
我是指用鱼、血和骨头制成的粉末。