Phenoxyl
苯氧基
🗣️ 情景例句
I think we'd better head home.
我想我们最好上路回家啦。
A man may dig his grave with his teeth.
祸从口出。
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。