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1. Wireless demand and usage have also exploded across the entire width and breadth of Latin America.
    整个拉丁美洲对无线通信的需求和使用已急速增加。

2. The car was damaged by rough usage.
    这台车由于乱用而损坏。

3. Powerfrugal systems would keep electricity usage low so that the demand on outside sources is low.
    节能系统能使用电量降低,因此对外来电力的要求比较少。