单词：three bladed propeller
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CHRISTOPHER BOOKER: Every night, usually somewhere between dinner time and putting her children to bed, Louisville nurse Dawn Sirek reaches for her inhaler. DAWN SIREK: It's really simple and that's it. CHRISTOPHER BOOKER: On good days, this is only
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About Canoe / Kayak （Olympic sport since 1936） 皮划艇概述（1936年成为奥运会正式比赛项目） The history of the canoe and kayak has been traced back thousands of years to when nati
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Finally, the long-awaited flying car is almost here. 终于，人们期待已久的飞行汽车就要面世了。 AeroMobil, a Slovakian company, plans to start selling its creation, the AeroMobil 3.0, in 2017. 斯洛伐克公司AeroMobil计划在201
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