Acetylic
a. 乙酰基群的
🗣️ 情景例句
Loosen up! it's not worth getting upset about.
放松点儿！ 不值得为这件事苦恼。
Cindy's sister is coming to stay with her a week from tomorrow.
辛迪的妹妹从明天起一个星期以后将过来和她住在一起。
The speedboat had struck a buoy, but it continued to move very quickly across the water.
快艇撞上了一个浮标，但它仍在水面上快速行驶着。