麻烦大家帮我翻译以下的中译英（有提示）！！急！

1有两种方法可以获得电，一种是电池，一种是发电机（获得：get / obtain by )

2干电池可以方便地获得电，成本低，但它们的寿命较充电电池短（It's convenient to do ______,they are cheap,but last _____than _____)

1.There are two ways to get electricity, a battery, a generator is 2.The dry cell battery may obtain the electricity conveniently, the cost is low, but their life compares the rechargeable battery to be short

1.There are two ways to get electricity, a battery, a generator

2.Batteries can easily obtain power, low cost, but their life span shorter than the rechargeable batteries

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