Yolk endoderm
[医] 卵黄内胚层
🧩 词语组成解析
yolk
[jok]
n. 蛋黄;卵黄;羊毛油脂;胚乳;
n. 内胚层\\n[医] 内胚层, 下胚层
🗣️ 情景例句
I know I should,
我知道应该这样，
Did you give it to him yourself?
你自己亲自交给他吗？
Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.
森林火灾时常由破碎的玻璃或人们随手扔掉的香烟头引起。