I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.
我星期五会给你打电话,在你方便的时间重新安装我们的午餐约会。
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,