它还将检查证书,以确保它没有过期。
It also checks the certificate to make sure that it has not expired.
这座设计拙劣的桥需要做补救工作,以确保它的安全。
The poorly designed bridge needs remedial work to make it safe.
放养后,熊猫幼崽会被隐藏的摄像机密切监测,以确保它的安全。
Once released, the cub will be closely monitored through hidden cameras to ensure its safety.
to make sure that they didn't knock it down.
以确保它不被拆毁。
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