learnv.学会；学习；得知learn by oneself自学learner centered以学生为中心Learn and memory学习记忆learn on the job见习learn a language学习语言learn his lessonvi.获得教训(避免重犯)learn more about了解更多关于…learn by rote.死记硬背地学习learn our lessonvi.获得教训(避免重犯)learner autonomy自主学习

1. We heard the distant bay of the hounds.
   我们听到远处一群猎犬的吠声。