Ectoblast
n. 外胚层\\n[医] 外胚层, 外膜
🗣️ 情景例句
You're probably right.
也许你说得对。
You agreed that we could make a little change in design if necessary.
可你们曾经答应这，如有必要，图案可以稍作改动。
but one day, after heavy shower, I happened to be walking in my garden when I noticed a huge number of snails taking a stroll on some of my prize plants.
后来有一天，一场大雨后，我在花园里漫无目的散步，突然注意到许许多多蜗牛在我的一些心爱的花木上慢悠悠的蠕动着。