谈到: to refer to, to speak about, to talk about...
双打: doubles (in sports)...
囚犯: prisoner, convict...
耳熟能详: what's frequently heard can be repeated in detail (idiom)...
通知: to notify, to inform, notice, notification...
深度: depth, (of a speech etc) profundity, advanced stage of development...
海洋: ocean...
