they can stand up and walk[d ]water为什么选d呢?a.in b.atc.with d.on

they can stand up and walk[d ]water为什么选d呢?a.in b.atc.with d.on
they can stand up and walk[d ]water为什么选d呢?
a.in b.atc.with d.on

they can stand up and walk[d ]water为什么选d呢?a.in b.atc.with d.on
在表面上.

在水上走路(企鹅)