Because it has to drop off precipitously.

因为它必须陡然减少。

麻省理工公开课 - 固态化学导论课程节选

It has dropped precipitously and you note that the pink line, which shows the rate of growth of home prices, the rate of growth of home prices, has fallen just right along with the traffic of homebuyers.

而且跌的很突然,再看粉色线,粉色线代表了房价增长率,房价增长率,与购房者残参观量一样下跌

耶鲁公开课 - 金融市场课程节选

One over R to the sixth will come in, and then jump off precipitously.

/R的六次方会出现，然后陡然减少。

麻省理工公开课 - 固态化学导论课程节选