Procambium
n. 原形成层\\n[医] 前形成层, 前新生层
🗣️ 情景例句
How long will it take for my mail to reach its destination?
我的信件到达目的地要多久？
Venture a small fish to catch a great one.
吃小亏占大便宜。
Yes, Mom, said Lucy. I haven't forgotten anything.
“齐了，妈妈”露西说，“我什么也没忘记。”