Machine includes one safety edge and one emergency stop button to ensure the operator's safety.

机器包含一套安全感应条及急停按钮，保证操作安全。

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In my town, on the edge of the gas patch, the old middle school still hosts safety training for coal miners.

在我居住的地方，天然气厂旁边的那所老中学还在给矿工进行安全培训。

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Even with the protective gear, the scientists often operated at the edge of safety.

即使有保护装置，科学家们仍然常常是在危险的边缘进行工作。

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One study showed that hybrid models have a safety edge over their conventional counterparts when it comes to protecting drivers and passengers from injuries in crashes.

FORBES: Hybrids: Two New Reports Reveal Good and Bad News

Some aviation safety experts have questioned whether FAA has the in-house expertise to oversee the safety of cutting-edge technologies that haven't been in planes before.

NPR: FAA Approves Resumption Of Boeing 787 Flights

For most inter-city journeys of more than two hours and less than five, rail has the competitive edge in safety, reliability and speed over both aircraft and cars.

ECONOMIST: A better way to fly