Expect random checks, hand swabs to test for explosive residue and additional random checks at the gate.

在登机口会有随机检查, 检测炸药残留物及额外随机安检措施。

They do random checks to keep workers on their toes.

【toe】他们随机进行抽查，让工人不懈怠。

More than 160,000 people arrived in the country last year. In November, Sweden joined with Germany and Austria in temporarily introducing random border checks in Europe's passport-free Schengen zone.

去年有超过16万人抵达瑞典，11月，在免护照的申根地区，瑞典和德国及奥地利临时实施了边境随机检查。