As commuters pass by on their way to work, they can use a mobile-phone app to take pictures of the products they want, then check out.

当通勤的上班族经过地铁上班途中，他们可以用手机登陆，拍下所需商品的照片，然后付款。

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But there is an increased police presence, as you can see, here. And the thousands of commuters that pass through every hour are being warned to be vigilant.

但是你可以看到，这里的警力部署已经增强，每个小时通过的数千名乘客都被告知保持警惕。

youdao

But there is an increased police presence, as you can see, here. And the thousands of commuters that pass through every hour are being warned to be vigilant.

但是你可以看到，这里的警力部署已经增强，每个小时通过的数千名乘客都被告知保持警惕。

youdao