Rapcon
雷达临场指挥
🗣️ 情景例句
I expect that I will be back on Sunday.
我预计星期日回来。
Cheerful company shortens the miles.
旅有好旅伴，不觉行程远。
Oil rigs have to be repaired frequently and divers,who often have to work in darkness a hundred feet under water,
钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，