bulwark
n
1 wall, esp of earth, built as a defence 壁壘(尤指用泥土堆砌者); 防御工事.
2 (fig 比喻) person or thing that supports, defends or protects 支持, 防御或保護的人或事物
Democracy is a bulwark of freedom. 民主是自由的保障.
3 (usu pl 通常作復數) ship's side above the level of the deck 舷墻(甲板線以上的船側).
??? 情景例句
We'd all like to believe that we have a bright future ahead of us.