glacis

The castle's glacis was designed to keep attackers in the open for as long as possible.

(Chinese) 城堡前面的斜坡设计目的是让进攻者尽可能长时间地暴露在开阔地带。

Soldiers had to climb the slippery glacis under heavy fire from the fort.

(Chinese) 士兵们不得不冒着来自堡垒的密集火力攀登湿滑的斜坡。