您要查找的是不是：
- Scientists have studied the migration of fish over long distances. 科学家研究过鱼类远距离回游的现象。
- Scientists have studied the migration of fish over long distances in the river. 科学家研究过江中的鱼类远距离回游的现象。
- Herbicides are difficult to apply horizontally over long distances. 要在长段距离的水平方向施用除草剂也很困难。
- A current of high potential is used in transmitting electric power over long distances. 高压电流被用来远距离输送电力。
- Do not expose the balance to extreme moisture over long periods. 请您不要将天平长期置于湿度较大的环境里。
- The companies have performed well over long periods. 可是长期以来，这些公司确实成绩斐然。
- Usually quarried stone must be hauled over long distances. 而且其还具有更好的气候适应性，颜色一致性。
- Do you realize that they are just dumping this stuff all over long island? 你知道吗?整个长岛都是这些有毒的东西。
- At the beginning it was difficult to hear people over long distances. 开始很难听到远方的人讲话的声音。
- Impulsiveness leads teens to seek immediate results over long term goals. 冲动导致青少年们忽略长期目标而去追求立竿见影的效果。
- Gas injected PEX? dielectric for accurate signal transfer, even over long runs. 专利的PEX?气体电介质注入技术令到信号传输精确;经久耐用.
- This area was very heavily mined by both sides over long periods of the war. 在那场旷日持久的战争期间，双方都在这个地区布上了非常密集的地雷。
- Solar ovens cook food at low temperatures over long periods of time. 很长的时间里太阳能炉具都在低温下使用。
- Some insects have remained more or less unchanged over long periods. 有些昆虫在很长时间内都几乎没有变化。
- Award more bonuses in shares and pay them over longer periods. 根据股份施行奖励性的红利，并且长期支付。
- But the armoured cars could not keep pace with the camels and were quick to bog down over long stretches in the desert. 但这些装甲车无法与骆驼保持协同速度，而且在沙漠里开的距离过长就很快会出现问题。
- The natives sent news over long distances by beating out a message on a hollow log. 当地土著靠敲击空心圆木来传递信息，他们击木为号，把消息传至远处。
- A current of high potential is used in transmitting electric power over long distance. 高压电流被用来远距离输送电力。
- From the earliest times people were faced with the problem of sending messages over long distance. 远古以来，人们就面临着远距离传送消息的问题。
- Keep equipment in service over longer periods without shutdown for cleaning. 延长设备使用寿命，减少设备维修次数，清理时无须停止运转。
