She smoothed her hair down with a wet comb.

她用湿梳子将头发梳顺。

He smoothed the path / way for us.

他为我们铺平了道路。

His hair was smooth and black and his voice was deep.

他的头发顺滑乌黑，他的声音低沉浑厚。

a smooth sea

平静的海面

The car came to a smooth stop.

汽车平稳地停了下来。

Her journey to becoming the fastest woman on earth has been anything but smooth and effortless.

她成为全球跑得最快的女性的道路并非一帆风顺。