Again, at the very basic level, you need the server-side check.

再次，在最基础的水平上，你需要服务器端的检查。

youdao

At this store, people check out and then go off to the side to bag their own groceries.

在这家商店里，人们先结账，然后到一边去把他们买的东西装到袋子里。

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The goal is that the field will be validated on the server side to check that it is not empty and that the value is numeric.

目的是将字段在服务器端验证，检查其是否为空，其值是否是整数。

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Unlike most of its competitors, Southwest does not impose additional fees for items such as seat selection, fuel surcharges, curb side check-in and telephone reservations.

FORBES: AirTran In Belly, Southwest Ready To Kick Some Tail Fin

One crowded Friday evening, I looked up to find a teenaged boy and a short man on the other side of my check-in podium.

FORBES: An Oscar Night Reflection of a Different Kind

Until then, check a side-by-side test done by the cats over at Animation World Network pitting a prototype Alexa against a RED One equipped with a new MysteriumX sensor and software.

ENGADGET: ARRI Alexa joins RED to kill celluloid in 2010