Whewellite
水草酸钙石
🗣️ 情景例句
I'm sorry, I don't really understand.
对不起，我真的听不懂。
You can't get it any cheaper than this.
这再便宜你就买不到了。
He always meant to go back on day, but not to stay.
他总想将来回国看看，但却不愿长期住下去，