Mammogenesis
乳腺发育
🗣️ 情景例句
Yes, I am.
是的，我是。
I'll call you up later.
我稍后会打电话给你。
What a relief it was when the boulders suddenly disappeared, giving way to a stretch of plain where the only obstacles were clumps of bushes.
突然大石块不见了，前面是一片平地，唯一的障碍只有一簇簇灌木丛。这使我们长长地松了口气。