When sound waves enter the cochlea, which is really a tube coiled around, they set a membrane into a back and forth motion and cause a new wave.
当声波进入耳蜗这条盘旋的管道，它令薄膜前后移动并且产生新的波动。
Astronomy enthusiasts often enter this field as hobbyists, using binoculars or a telescope to observe the motion of planets or artificial satellites orbiting the earth.
很多天文爱好者最初对该领域的研究都是从业余爱好开始的，他们会用双筒望远镜观察星系的变化，观察人造卫星环绕地球运行的规律。
Astronomy enthusiasts often enter this field as hobbyists, using binoculars or a telescope to observe the motion of planets or artificial satellites orbiting the earth.
很多天文爱好者最初对该领域的研究都是从业余爱好开始的，他们会用双筒望远镜观察星系的变化，观察人造卫星环绕地球运行的规律。
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