Wofatit
离子交换树脂
🗣️ 情景例句
She has the ability to keep calm in an emergency.
她有处变不惊的本事。
Please show me a smaller one.
请给我看一件小一点的衣服。
The next time you see a watch, look at the back. You may see the English words Made in China.
下次你瞧见一块手表是，瞧瞧它的背面。你也许能看到“中国制造”的英语字样。