1、We will fight to the bitter end to ensure our children get what is rightfully theirs.
我們會(huì)斗爭(zhēng)到底，確保我們的孩子得到理應(yīng)屬于他們的東西。

2、They were prepared to fight to the bitter end for their rights.
他們甘愿為自己的權(quán)利斗爭(zhēng)到底。

3、He hand over to the king a bitter end of heavy rope, let the king lightly pull once.
他把一根粗繩的末端交給國(guó)王，讓國(guó)王輕輕拉一下。