Phthalhydrazide
邻苯二甲酰肼
🗣️ 情景例句
more than reading, writing, and arithmetic.
比阅读 、写作及算术更多的东西。
What is he doing?
他做什么事？
Advertisers discovered years ago that all of us love to get something for nothing.
做广告的人们多年前就发现我们大家都喜欢免费得到东西。