Levair
磷酸铝、钾、钠盐
🗣️ 情景例句
Sorry, I have to say good-bye.
我不得不说再见了。
When was the last time he wrote you ?
他给你写最后一次是什么时候？
I'm free on Thursday. I'd love to come.
我星期四有空。我很乐意来。