Ectoderm
n. 外胚层, 外层\\n[医] 外胚层
🗣️ 情景例句
Oh, nothing's wrong, Richard.
噢 ，没有什么事， Richard。
I'm afraid I've let myself get run-down. I've been working too hard.
我似乎弄坏身体了。最近太过劳累。
Her shopping had tired her and her basket ad grown heavier with every step of the way home.
去商店买东西把她搞得筋疲力尽；在回家的路上，她每走一步，就感到手里的篮子又重了一点。