Themachineishardto（控制）．Theremu

The machine is hard to　　（控制）． There must be something wrong with it．

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每一个中国人都应该记住四月十五日是国家安全日．

Every Chinese should　　that the　　Security Day is on April 15^th．

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由中国建设的肯尼亚蒙内铁路于五月三十日开通运行．它开启了非洲的世纪梦想．

Monbasa﹣Nerobi Railway Line in Kenya was built by China and put into use on May 30^th and it started the　　century　　．

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毫无疑问在南海采集可燃冰将给中国提供大量的清洁能源．

There is no　　that collecting the flammable ice at South China Sea will provide China with a large amount of　　energy．

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一架海南航空公司的客机于2016年7月13日在渚碧礁新建机场成功地着陆并返航．

A plane from Hainan Airlines　　and flew back at the newly﹣built airport of Zhubi Reef on July 13^th， 2016．

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在许多大城市共享单车能使人们自由地到处旅游又无污染．

In many big cities，　　bikes can make people travel around freely without　　．

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