Ectoderm
n. 外胚层, 外层\\n[医] 外胚层
🗣️ 情景例句
just half a mile down the road from the Watermill.
从Watermill往下走只要半英哩。
Please answer the door.
请去开门。
Sure! Jim's coming, too.
当然可以！吉姆也要来的。