Protocambium
原形成层
🗣️ 情景例句
Nice to meet you, Mr. Carlson.
很高兴见到你 Carlson先生。
My aunt will come to live with me for some days.
我阿姨会来和我住一些日子。
In place of the great trees which had been growing there for centuries patches of green had begun to appear in the blackened soil.
一片片的绿草开始出现在这片烧焦的土地上，代替了多少世纪以来一直生长在那里的参天大树。