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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The tricycle gear configuration also allows excellent forward visibility while on the ground - crucial when operated in off-airport fields.

三轮车齿轮的配置也可以让优秀的前进能见度，而在地面上-关键操作时，在场外机场领域。

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Transaxles give their best fuel economy when operated in the top cruise gear and with steady pressure on the gas pedal.

当运行在定速巡航状态和恒定的压力作用在油门踏板上时，此时驱动桥能有最佳燃油经济性。

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The brakes worked well, and the gear settings operated just like on a standard bike.

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The momentum is due in part to greater taxonomy efforts, a growing number of researchers involved in describing new species, and new technologies allowing them to access previously unexplored areas (including improved diving gear and remotely operated submersible vehicles).

UNESCO: THEMES