只在半英里以外有一个警戒哨，位于铁道线上，桥的这一端有一名哨兵把守。

Only a picket post half a mile out, on the railroad, and a single sentinel at this end of the bridge.

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实验考古学似乎是解决方案：半尺寸或全尺寸的船只重建将允许评估有关其建造和丢失端的不同假设。

Experimental archaeology seemed to be the solution: a boat reconstruction, half-scale or full-sized, would permit assessment of the different hypotheses regarding its build and the missing end.

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留有开口的半环形轴承，用于内啮合齿轮双端支承及定轴齿轮箱。

A semi-annular bearing with an opening is used to support both ends of inside engaged gear or for fixed-axle gear box.

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