Selemion
一种均质离子交换膜
🗣️ 情景例句
They graduated from high school last year.
他们去年高中毕业。
I ask him to tell me everything he thought.
我要求他告诉我，他所想得每件事情。
Many of the men fell sick with fever.
许多人因发烧而病倒。