sacrifices [ˈsækrəfaɪsɪz]

1. 名词，复数形式，意为“牺牲，献祭”，指为了达到某种目的而放弃或失去的东西。

2. 动词，第三人称单数形式，意为“牺牲，献祭”，指为了某种目的而放弃或失去某物。

用法：

作为名词时，“sacrifices”通常用于表示某人为了实现某种目标或理想所做出的付出、牺牲或损失。作为动词时，“sacrifices”通常用于表示某人放弃、献祭或牺牲某物来换取其他利益或实现其他目的。

例句：

1. The sacrifices my parents made for me are immeasurable. (我的父母为我所做出的牺牲是无法估量的。)

2. She had to make sacrifices in order to pursue her dream of becoming a doctor. (她不得不做出一些牺牲来追求成为一名医生的梦想。)

3. The soldiers were willing to make sacrifices for their country. (士们愿意为做出牺牲。)

4. The company's profits have increased, but at the expense of employees' sacrifices. (公司利润增加了，但是以员工的付出为代价。)

5. She sacrificed her own happiness for the sake of her family. (她为了家庭的利益牺牲了自己的幸福。)

同义词及用法：

1. Give up：放弃，指主动放弃某物或某事。

例句：He gave up his job to take care of his sick mother. (他放弃了工作照顾生病的母亲。)

2. Surrender：投降，指被迫放弃某物或某事。

例句：The army was forced to surrender their weapons. (被迫投降武器。)

3. Forfeit：丧失，指因违反规定或协议而被剥夺某物。

例句：He forfeited his prize because he cheated in the competition. (他因在比赛中作弊而被取消奖励。)

编辑总结：

“sacrifices”一词既可以作为名词表示牺牲、献祭，也可以作为动词表示牺牲、献祭某物以换取其他利益或实现其他目的。在日常生活中，我们经常会遇到需要做出牺牲的情况，这时候我们可以使用“sacrifices”来表达自己的付出和牺牲。同时，还可以根据具体语境选择同义词来丰富表达。