Swithin saluted them over the top rail.

Swithin 在顶部栏杆上向他们敬礼。

The smaller stumps he could jump two at a time, and he could walk on the top rail of the fence without being afraid.

较小的树桩他可以一次跳两个，他可以毫无畏惧地走在篱笆的顶部栏杆上。