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
A journey of a thousand miles begins with a single step.
千里之行，始于足下。
You are to blame.
你该受谴责。
Can I have a look at it?
我可以看一下吗？