Wofatit
离子交换树脂
🗣️ 情景例句
Well, we're not sure we can afford one.
嗯 我们还不知道是不是负担得起。
Time past cannot be called back again.
光阴一去不复返。
Where do you think you are? On a race track?
你认为你现在是在哪儿？在赛车道上吗？