Procambium
n. 原形成层\\n[医] 前形成层, 前新生层
🗣️ 情景例句
OK, let's talk.
好吧，我们来谈谈。
I will happily admit that I am as nervous as a cat on a hot roof.
我承认现在我非常紧张，像热锅上的蚂蚁一样。
These satellites go round the earth and help us to learn more about the earth, the weather and other things.
这些卫星绕着地球转，帮助我们更好地了解地球、天气和其他情况。