Eustele
n. [植]真中柱( 存在于大多数裸子植物和被子植物的茎内)
🗣️ 情景例句
How do you keep in shape?
你怎么保持身材？
I always used to ask him a lot of questions.
我过去总是问他很多问题。
No matter how many guests were present, the great house was always immaculate.
不管去多少宾客，大房子里总是收拾得干干净净。