They may complain of diarrhea or bellyache.他们可能会主诉腹泻或腹痛。I have to complain to the manager about it.对这件事我不得不向经理申诉。If you can't get any satisfaction, complain to the park owner.如果你得不到任何赔偿，向园区所有者投诉。Bill started to comp...
If you're not satisfied with the life you're living, don't just complain. Do something about it.对于现况的不满，不能只是抱怨，要有勇气作出改变。Faculty members complain that their students are unprepared to do college-level work....
The wing of the plane broke off in midair and the plane crashed.机翼在空中脱落,致使飞机坠毁.Hundreds of fireworks burst simultaneously in midair.成百上千朵烟花在半空中同时绽放。Have you seen two meteors mutual attracting in midair of simultaneously ...