Mesectoblast
中外胚层, 外中胚层
🗣️ 情景例句
Tell me about your educational background.
告诉我你的学习背景。
The post office is up there on the left, You can't miss it.
那邮局就在那儿靠左边，很好找。
Dimitri immediately went to Aleko's house and angrily accused him of stealing the lamb.
迪米特里立刻去了阿列科家，气呼呼地指责他偷了羔羊，