跨服务器的通信必须确保安全。

The communication across the servers has to be secured.

youdao

公共娱乐场所在营业时必须确保安全出口和疏散通道畅通无阻，严禁将安全出口上锁、阻塞。

Public places of entertainment must ensure safe exit and evacuation channel smoothly in the business, it is strictly prohibited to export safety lock, blocking.

youdao

港口装卸的安全性对物流的畅通和港口企业的经济效益都有着举足轻重的作用，因此，港口装卸作业必须确保安全。

The safety of port loading and unloading is crucial to the unblocked transportation and the economic performance of the port enterprise, so it must be ensured.

youdao

So they have to be engineered to be inert so that they can be safely inside a system and there's not every material you could pick would have that property.

缝合线必须是惰性的,以便确保植入人体后的安全性,不是随便哪个材料都能做到这一点

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