美语听力练习素材:美军展示最大无人船

音频下载[点击右键另存为]

例句：Before turning, you should slow down your car.
转弯前，你得先减速。

2.nautical mile 海里

例句：A nautical mile is one minute of latitude or 1.852 kilometers.
一个海里是一个纬度的一分或1.852公里。

3.solar-powered 太阳能的

例句：It is also equipped with cutting-edge technologies such as the solar-powered ventilation system.
同时第三代普锐斯还配有诸如太阳能通风系统的尖端技术。

4.touch down 着陆

例句：The plane touched down at 17:45 at Heathrow Airport.
飞机于17点45分在希斯罗机场降落。