The Pelamis's design avoids the trade-off between resilience and efficiency by switching to a higher-efficiency mode in calm seas.
“海蛇号”的设计通过采用在平静海面更高效的模式，从而避开了弹性和效率不可兼顾的矛盾。
Urban Rail Transit (referred to as URT), as a low energy consumption, low pollution, high efficiency mode of transport, has been widely used in large and medium cities around the world.
城市轨道交通(简称城轨交通)，作为一种低能耗、低污染、高效率的运输方式，在世界各国的大中型城市都得到了广泛的应用。
Urban Rail Transit (referred to as URT), as a low energy consumption, low pollution, high efficiency mode of transport, has been widely used in large and medium cities around the world.
城市轨道交通(简称城轨交通)，作为一种低能耗、低污染、高效率的运输方式，在世界各国的大中型城市都得到了广泛的应用。
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