✅ 同义词
🗣️ 情景例句
That doesn't make sense.
那没有意义。
I've got a terrible pain in my back.
我的背很痛。
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。