求翻译：第三，从订货、买货到货物上门无需亲临现场，既省时又省力； 第四，由于网上商品省去租店面、召雇员及储存保管等一系列费用，总的来说其价格较一般商场的同类商品更便宜。是什么意思？

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Third, from the ordering, buys goods to the cargo to visit does not need to arrive personally the scene, both time-saving and reduces effort; Fourth, because on the net the commodity omits rents the shop front, summons the employee and the storage storage and so on a series of expenses, generally sp

Third, from ordering, buying goods to goods-site without having to visit the site, saving time and effort; IV, as Internet product saves a rented storefront, call employee costs such as storage and custody, on the whole its price instead of the usual shopping for similar goods cheaper.

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