易混淆的单词： Swings

The pendulum swings back and forth .

这就像单摆一样来回摆动。

As the tail swings , the water moves and drags the particles along .

当尾巴摆动时，水会移动并拖动颗粒。

For political winds are as unpredictable as swings in commodity prices .

因为变化莫测的政治局势就像摇摆不定的产品价格一样，无法预测。

Currency and interest-rate swaps , for instance , allow global corporations to focus on their businesses without having to worry about wild swings in currency values .

比如说，货币和利率的转换允许跨国公司把精力集中在他们的生意上不用去担心货币值的胡乱摆动。

They perfect their swings , their throws , their strides not by adding movement , but by eliminating any movement that 's unnecessary .

他们并不通过增加动作来完善他们的摆动、投掷或步法，而是通过减少任何不必要的动作来完成的。