Procambium
n. 原形成层\\n[医] 前形成层, 前新生层
🗣️ 情景例句
Do you want to get together and study sometime?
你想和我一起学习吗？
My brother was discharged from hospital last week.
我兄弟是上周出院的。
Some fishermen are unlucky.
有些垂钓者就是不走运，