直线滑降

例句：

1. 1. The car's speed was so fast that it made a straight line down the road.
   汽车的速度太快了，沿着道路一直直线下滑。
2. 2. The temperature dropped significantly, causing the river to make a straight line down the valley.
   温度急剧下降，导致河流沿着山谷直线下滑。
3. 3. The team's performance improved dramatically, leading them to make a straight line down the rankings.
   团队的表现显著提高，使他们在排名中直线下滑。