它重量轻，成本低，还防水，这些优点使它们便于携带杂货、衣服，以及其他日常商品，很难想象没有它们的生活会是什么样子。
Their light weight, low cost, and water resistance3 make them so convenient for carrying groceries, clothing, and other daily purchases that it's hard to imagine life without them.
它具有效率高，输出电压稳定，交流纹波小，体积小和重量轻的许多优点。
It has high efficiency and output voltage stability, exchange ripple small, small size and light weight of the many advantages.
半导体收音机的主要优点是体积小，重量轻和功耗低。
The advantage of a semiconductor radio consists in its small size, light weight and low power consumption.
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