thin-out

1.The barber thinned out his customer's thick hair.

理发师把顾客浓密头发削薄了些。

2.Towards the city limits the houses begin to thin out.

靠近城市尽头地方房稀少起来。

3.They thinned out a stand to create a lush forest tomorrow.

他们去了林场中多木, 以利来日森林长得更茂密。