失眠有时是某些药物产生的副作用。Sleeplessness is sometimes the side effect of certain medications.他接受放射治疗，副作用很大。He reacted very badly to the radiation therapy.该药的副作用可能包括排便失禁。The drug's side-effects can include involuntary defecatio...
Car horns toot as cyclists dart precariously through the traffic.骑车人危险地在车流中飞速穿行时，汽车喇叭的嘟嘟声响成一片。The series of steep hills sapped the cyclists'strength.一连串坡度很大的小山耗尽了骑车人的气力.Cyclists who swerve to avoid dogs may fall off...