More important, they represent, if anything, an expansion of America's role in the world, our responsibilities and at a time when the world seems more likely than ever to spin out of control.
更重要的是，他们所代表的是美国在世界上的责任和作用的扩大，而当今世界似乎比以往任何时候都更容易失控。
Every time Susan Roaf goes out for a spin in her car, she knows it won't cost her a penny.
每次苏珊·罗芙坐着她的轿车出去兜风，知道用不了几个钱。
As the heli pulls out the the dive the head will spin up very fast. So fast you will have quite a lot of hovering time.
飞机从俯冲状态拉起时机头会很快上升，会得到很多的悬停时间。
As the heli pulls out the the dive the head will spin up very fast. So fast you will have quite a lot of hovering time.
飞机从俯冲状态拉起时机头会很快上升，会得到很多的悬停时间。
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