桥的一端，桥头哨兵的身外，看不到任何人的踪影；铁道线平直地向外延伸，进入森林百米的深处，然后转个弯，消逝于视线之中。
Beyond one of the sentinels nobody was in sight; the railroad ran straight away into a forest for a hundred yards, then, curving, was lost to view.
该绳索或绳缆应可以在两根网柱的上端稳固地伸拉平直。
The cord or cable shall be stretched firmly, flush with the top of the posts.
文章详细地介绍了从飞行力学的角度来确定直升机平直飞行时的旋翼功率传递系数。
In this paper, the rotor power transfer coefficient is determined from the point of helicopter flight dynamics.
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