Ectoblast
n. 外胚层\\n[医] 外胚层, 外膜
🗣️ 情景例句
I have learned to use computers and have become familiar with all clerical duties.
我学会使用电脑及熟悉所有文员的工作。
It is an evil sign to see a fox lick a lamb.
狐狸舔羔羊，不是好迹象。
She's sitting under the tree.
她正在树荫下坐着。