如何使用 "rate" 造句

1. Built-in motor rotates this illuminated earth at a constant rate .
内置马达让这款装有灯饰的地球仪以恒定速率旋转。
2. Their savings rate is now negative .
其储蓄率如今为负数。
3. But our retention rate is very high .
但我们留下来的比率极高。
4. What will be the rate of warming ?
全球变暖的速度会有多快?
5. By 2010 that rate had risen nearly three-and-a-half times .
到2010年,这个比例增长了2.5倍。