1. When a wire is broken by bending it back and forth rapidly, some of the work is transformed into heat and the wire gets hot.
当把导线快速地（通过）来回弯曲折断时，部分功就转换成热，所以导线变热．
2. When the moon changes it position, so do the orientation of the tide-generating forces and the position of the equilibrium tide.
当月亮的位置改变时，引潮力的取向和平衡潮的位置也改变了．
3. The water vapor will change from its invisible state to condense into visible moisture when the dew point temperature is reached.
当露点温度达到时，水气将从其看不见的状态凝结成可见的水分．
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