Wofatit
离子交换树脂
🗣️ 情景例句
Are you good at it?
你很擅长吗？
When does it get there?
什么时候到那里？
OK. We can get some more tomorrow. We should finish the floor now. Can you take the other end of this piece of wood? Now you have to pull it to make the surface smooth like that.
好吧。我们明天再多买些。现在我们应该把地板弄好。你能抓住木板的另一端吗？现在你要来回拉动木板，使它的表面象那块儿木板一样光滑。