在高峰时段，交通慢得像爬行一样。

Traffic ___slows to a crawl during rush hour.

飞行员被要求减慢接近跑道的速度。

The pilot was asked to ___slow his approach to the runway.

话虽如此，我确实同意提高石油价格是不可避免的，以试图减缓这种有限资源的耗尽速度。

Having said that, I do agree that it is unavoidable to have increasing prices on oil, in an attempt to ___slow the rate of depletion of this resource that is not unlimited.