agent 是什么意思？

剂, 因素

a person or thing that takes an active role or produces a specified effect

示例:• Water is a powerful eroding agent.水是一种强大的侵蚀剂。• The police identified the chemical agent used in the attack.警方查明了袭击中使用的化学制剂。同义词:forcecausemediuminstrumentcatalyst