Phthalimide
苯邻二甲酰亚胺, 酞亚胺
🗣️ 情景例句
That leaves a lot to be desired.
太不让人满意了。
You're sure of passing the exam if you work hard.
只要用功，主汪定能考及格。
This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
这种通讯联系要靠21厘米波段，即每秒1420兆周的精确无线电频率。