Zeolon h
分子筛(含有H离子)
🗣️ 情景例句
Oh, Grandpa, I'm so happy to see you!
啊， 爷爷！ 见到您我真高兴。
Which one is the longest river in China?
中国哪条河流最长？
After a long period of rain the river may overflow its banks.
久雨这后，河水会泛滥成灾，