effusion
/ɪˈfjuːʒən/noun
1- an instance of giving off something such as a liquid, light, or smell（液体、光或气味的）流出, 泻出, 发散：
a massive effusion of poisonous gas
有毒气体的大量泄漏
mass noun he studied the rates of effusion of gases.他研究了各种气体的泄漏速度。
1.1
- Medicine an escape of fluid into a body cavity【医】渗出。
1.2
- an act of talking or writing in an unrestrained or heartfelt way倾诉（指无约束、真诚地说或写）：
literary effusions.
文学倾诉。
词源
late Middle English: from Latin effusio（n-）, from effundere 'pour out' （see EFFUSE）.