Before you buy something, photograph its bar code with your phone and make sure you're getting the best price.

买东西前先用手机拍下它的条形码，然后确定这价格是最实惠的。

youdao

Before you buy something, photograph its bar code with your phone and make sure you're getting the best price.

买东西前先用手机拍下它的条形码，然后确定这价格是最实惠的。

youdao