The oxygen isotope ratio of the ocean changes as a great deal of water is withdrawn from it by evaporation and is precipitated as snow to form glacial ice.
随着大量的水通过蒸发被抽离，并以雪的形式沉淀形成冰川冰，海洋中氧同位素的比率就发生了变化。
2
We believe that tightening in the form of a hike in both deposit and lending interest rates, or yet another hike in the reserve requirement ratio, is imminent.
我们相信，以同时提高存贷款利率或再度提高存款准备金率为形式的紧缩手段即将到来。
3
In any form of instruction an optimum teacher-to-pupil ratio is important, especially in youth and high school baseball.