Ectomesoderm
外中胚层
🗣️ 情景例句
Stretch up...and we're going to go left first ...
伸展……先向左……
Enough! I don't want to hear it!
够了，不要再说了！
He acted as if he had never lived in England before.
他的举动就好像他从未在英国生活过一样。