Mesectoderm
中外胚层
🗣️ 情景例句
Please excuse me for a minute.
失陪一会儿。
Yes, sir. Your account was overdrawn 15 dollars on the 12th of this month.
是的，先生。本月12日这一天您的帐户上透支了15美元。
When the news got round that a comedy show would be presented at our local cinema by the P.and U.Bird Seed Company,
当“皮尤”鸟食公司将在我们当地影院演出喜剧节目的消息传开后，