bulwark

保障、防线、屏障正式

A free press is a bulwark against the abuse of power.

新闻自由是防止滥权的一道屏障。

防御工事、堡垒、壁垒

The old city is still ringed by thick stone bulwarks.

这座旧城至今仍被厚重的石造防御工事环绕。

舷墙常用复数

Waves crashed over the bulwarks and soaked the whole deck.

浪打过舷墙，把整个甲板都浇湿了。

捍卫、保卫、巩固正式

New laws were passed to bulwark the rights of tenants.

政府通过新法，以捍卫承租人的权益。