Nalcite
离子交换树脂
🗣️ 情景例句
When did you come here?
是什么时候来这儿的？
He is playing on the see-saw in the yard.
他正在院子里玩跷跷板。
These are the parts of the character: ear, you, eyes, undivided attention and heart.
“耳”、“你”、“目”、“专一”和“心”。