They refused to release their hostages unless certain conditions were met.

除非某些条件得到满足，否则他们不会释放人质。

《牛津词典》

A federal ruling, upheld by the Supreme Court in May, has found the conditions "cruel and unusual", and requires California to release roughly 30, 000 inmates in the next two years.

五月一项被高级法院支持的联邦裁定指出了这种状况是“残忍的和非正常的”并且要求加州在接下来的两年时间里释放大约三万名囚犯。

youdao

There are certain conditions for release, one of which is that a prisoner has only three months to live.

在一些情况下可以释放罪犯，其中之一就是犯人余下的生命不超过三个月。

youdao

I released a piece of candy, threw it from my hand, and the initial conditions have to do with where did I release it and with what velocity.

我从我的手中抛出一颗糖,初始条件就是,我从什么位置抛出的,以多大速度抛出的

耶鲁公开课 - 基础物理课程节选

The group said it could no longer guarantee the necessary security conditions to release the backpackers, as planned, before Christmas.

BBC: NEWS | Americas | Blow to hostage Briton's family

Members of the NLD said in late April they would consider taking part if the government agreed to conditions such as the release of political prisoners, including Ms. Suu Kyi, and opening up the vote to international monitors.

WSJ: Suu Kyi Trial Begins, Inciting Opposition

Lord Bannatyne made an order extending the time Fleming will remain subject to licence conditions, following his release, by two years.

BBC: Reece Fleming jailed for Edinburgh knifepoint rape