请问 develop certain listening skills 是培养一定的听力能力吗?certain 有"一定的"意思吗?

请问 develop certain listening skills 是培养一定的听力能力吗?certain 有一定的意思吗? develop develop develop certain certain certain Commercial use of the Internet is certain to develop very fast in the years to come翻译 请问enhance , improve, develop, increase ,proceed的区别 请问enhance ,improve,develop,increase ,proceed的区别 请问a certain和certain a哪个是某一的意思? 英语翻译people with kleptomania for certain medical reasons have failed to develop control over their desire to take things that are not theirs. 英语翻译People with Kleptomania for certain medical reasons have failed to develop control over their desire to take things that do not belong to them.顺便给分析分析.小弟只能看懂大概意思,但是for certain medical reasons 这部 请问a certain amount of 这个词组的准确意思 l am certain l will win the match[改为同义句】 1.The government wants to develop more (l)_________ (r)________(轻轨) systems. 请问a certain与certain a有什么区别?“某一个”或“某人”这里应该用哪个呢？ 请问a certain与certain a有什么区别?“某一个”或“某人”这里应该用哪个呢?