smoothen

Rub the outside of halved coconut shells with sandpaper to smoothen the surface.

将椰子壳切成两半，用砂纸磨光滑。

The highest court ruled in their favour, smoothening the way for the state to become the first in the nation to permit gay marriage.

最高法院作出了有利于他们的裁决，为这个州成为全国第一个允许同性婚姻的州铺平了道路。

The average performance of the fund during the five calendar years smoothens out to 7.8%.

这个基金在过去五个日历年表现平稳，平均为7.8% 。