In general, although the system detects both of the human body and the helmet, it cannot be assured operation workers are wearing helmets.

一般而言，系统同时检测到人体与安全帽并不能认为作业人员佩戴安全帽。

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The doctor assured us of the safety of the operation.

医生向我们保证手术的安全性。

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This single operation, a push of the "distress button", provides automatic, direct and assured connection to a competent rescue authority, thereby avoiding and eliminating possible human error.

这个单一的操作，推压“遇险按钮”，就提供一个自动、直接的连接，并确保连接到一个主管救助当局，因而避免和消除了可能的人为的错误。

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