sacrifice

他实现了梦想，但付出了巨大的个人代价。

He achieved his dream, but at great personal ___sacrifice.

志愿者牺牲空闲时间来支持慈善事业。

Volunteers ___sacrifice their spare time to support charitable causes.

许多志愿者为社区牺牲了他们的空闲时间。

Many volunteers ___sacrifice their free time for the community.