mechanical device attached to an elevated structure; rotates freely to show the direction of the wind 同义词：weathervane, vane, wind vane,
A weather vane (or weathercock) is an instrument for showing the direction of the wind
例句与用法
1.
In winter the weather vane often freezes up 气象风向标在冬季经常僵立不动。
2.
I believe it was this weather vane 就是这个风标
3.
Tried to grab the weather vane 竭力想抓住风标
4.
Much like weather vanes in whirlwinds , some sensors in a vortex receive water flowing one way while those on the other side find it flows in the opposite direction 就像旋风中的风向标一样，漩涡中一侧的传感器能够感应到同侧的水流，而另一侧的传感器能够感应到对侧的水流。
5.
Students at sookmyung women ' s university set a 5 . 3 metres in diameter weather vane at their campus in seoul may 16 , 2007 . about 100 students participated in the making of the weather vane 南韩淑明女子大学一群同学本月十六日正在位于首尔的校园内架起直径达五点三公尺的风向计，总共约有一百名学生参与这个风向计的设计和制造。
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