Paul stepped out of the crack, watched the sand wave recede across the waste toward the new thumper summons.

保罗走出裂缝，看着沙浪越过荒地向新的重击召唤物退去。

22.when passing one fathom bank , check the depth and variable sand waves below the sea level all the time by echo sounder

通过一托浅滩时，要一直测深校时水深及海面下多变的沙绞。

A mound-in-motion ran parallel to their rock island—moonlit ripples, sand waves, a cresting burrow almost level with Paul's eyes at a distance of about a kilometer.

一个运动中的土丘与他们的岩石岛平行——月光下的涟漪、沙浪、一个几乎与保罗的眼睛齐平的顶部洞穴，距离大约一公里。