Chalcogen
n. [化]硫族元素,氧属元素(包括氧、硫、硒等)
🔁 扩展释义
【化】 硫属元素; 氧族元素
🗣️ 情景例句
My instructor thought that the beginner's class was too easy for me.
老师认为初级课程对我来说太容易了。
He is not fit to command others that cannot command himself.
正人先正己。
We'll order after we see the sample.
我们要看过样品才会下订单。