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1·She has to travel over 300 days a year.

她每年要出差300多天。

2·In Japan, there are roads that play music as cars travel over them.

在日本，当汽车在公路上行驶时，公路会播放音乐。

3·Vision is used by micro bats to travel over long distances beyond the range of echolocation.

微型蝙蝠利用视觉进行超出回声定位范围的长距离飞行。

4·The canoes allow them to travel over a vast area that today would take a few hours to fly over.

这些独木舟使他们能够跨越一个广阔的地区，而今天飞过去需要几个小时。

5·Further evidence for persistent internal rhythms appears when the usual external cycles are shifted—either experimentally or by rapid east-west travel over great distances.

进一步的证据表明，当通常的外部循环被改变时——无论是通过实验还是通过快速的东西方向的长距离移动——就会出现持久的内部节律。

6·In the future, I want to travel over the world.

将来有一天，我要环游世界。

7·After they grow, they want to travel over the world.

当他们长大时，他们都想漫游世界。

8·Too much weight and travel over the material can damage it.

过多的重量和反复行驶会使马路损坏。

9·BEAR can travel over rugged terrain and lift up to 500 pounds.

BEAR能够通过崎岖地带并负重500磅。

10·And the pulses would travel over glass fibres, not copper wire.

并且脉冲能够通过玻璃纤维承载，不是铜丝。