那只天鹅正在湖边用喙梳理羽毛。

The swan is ___preening its feathers by the lake.

他花了半小时在镜子前梳理头发。

He spent half an hour ___preening his hair in front of the mirror.

她在镜子前整理头发，对自己的新造型非常满意。

She stood in front of the mirror, ___preening over her new hairstyle.