警犬嗅来嗅去,终于找到了踪迹.The police dog scented about till he found the trail.猎狗发现了兔子的踪迹.The hound found the trail of the rabbit.我们找不到他的踪迹.We have lost all trace of him....
这事故是因煞车过度磨损而造成的.The accident was caused by worn brake shoes.煞车不灵.The brake doesn't grip properly.他及时煞车,避免了一次事故.He braked his car just in time to avoid an accident....
The sedative makes people very somnolent.这种镇静剂会让人瞌睡。a somnolent Sunday afternoon使人昏昏欲睡的星期天下午The noise of the stream had a pleasantly somnolent effect.小河潺潺的流水声有宜人的催眠效果。...