某些音乐可以作为情绪释放剂，帮助我们缓解压力。

Some types of music can serve as emotional ___releasers, helping us relieve stress.

这个登山包配备了安全带快速释放装置。

The hiking backpack comes with quick ___releases for the safety harness.

这些化学物质作为释放物能触发鱼类的集群行为。

These chemicals act as ___releasers to trigger schooling behavior in fish.