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
Hello, Harry. It's nice to meet you.
你好 Harry 很高兴见到 。
It's none of my business,but I think you ought to work harder.
它是不关我的事，但是我认为你应该努力工作。
Would you be kind enough to sign our visitors book?
请在来宾簿上签名好吗？