少玩手机用英文怎么表达？

　　Please make sure all mobile phones are switched off during the performance.

　　请确保演出时关上所有手机。

　　The Siemens mobile phones made in Shanghai are sold back to European countries.

　　沪产西门子手机返销欧洲。

　　How much will it cost, more or less?

　　这个大概得花多少钱？

　　I read much less now than I used to.

　　我现在看的书比过去少得多。

　　It is less of a problem than I'd expected.

　　问题不像我预料的那么大。