The soldiers at the border halted the travelers to check their passports.

驻守边界的士兵把游客拦下来，检查他们的护照。

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At first the border guards tried to check passports, but they quickly realized it was futile.

刚开始，边境的守卫还试图检查护照，但他们很快发现这是徒劳的。

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Don't trust that lining up your layers by the exterior border will be correct-always check your alignment before you allow your glue to dry!

不要认为把图层按照外边沿为基准排列就一定是正确的——在胶水干之前，你需要不断的检查是否对齐。

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If someone is detained because they appear ill, a medical expert from the Centers for Disease Control and Prevention comes to the scene to check them and, if necessary, send them back over the border.

VOA: standard.2009.04.30

The cards would be used to check work authorization both at the border and inside the country.

FORBES: Taking a Good Look at the "Red Card Solution"

"A lot of Americans come down to Mexico and check their brains at the border, " says Duane Christie, an owner of the Century 21 master franchise in Mexico.

FORBES: Magazine Article

She remembers flying with him in his single-engine plane across the Iowa border to check out crops, even though he didn't own them.

FORBES: Magazine Article