✅ 同义词
🗣️ 情景例句
He lives alone
他一个人生活
Don't be anxious if I'm late.
如果我回来晚些也不必担忧。
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，