The first two are the most important and will likely more than double your current reading speed.

前两个是最重要的，它们可能让你的阅读速度不止提升两倍。

At out current speed, change will come too lateto limit warming to 1.5 degrees Celsius.

以目前的速度，改变来得太迟，无法将升温限制在 1.5 摄氏度。

The lava is moving at about 30 feet an hour, and at its current speed it will cut the town's main street in less than two days.

熔岩正以每小时约30英尺的速度流动, 而按照目前速度不到2天的时间城镇的主要街道将会减少。

The World Bank estimates we will need to produce 50% more food by 2050 if the planet’s population continues to grow at its current speed.

世界银行估计， 如果地球人口继续以目前的速度增长， 到 2050 年我们将需要多生产 50% 的粮食。