equilibrium [ˌiːkwɪˈlɪbrɪəm, ˌɛkwɪ-] (pl. equilibria -rɪə)
[mass noun]a state in which opposing forces or influences are balanced 平衡;均衡;均势 the task is the maintenance of social equilibrium. 任务就是维持社会力量均衡。 ■a state of physical balance 身体平衡 I stumbled over a rock and recovered my equilibrium. 我被石头绊了一下,然后又站稳了。 ■a calm state of mind (心情的)平静;心理平衡 his intensity could unsettle his equilibrium. 他的紧张会扰乱他平静的心绪。 ■(Chemistry)a state in which a process and its reverse are occurring at equal rates so that no overall change is taking place (化)平衡状态 ice is in equilibrium with water. 冰和水处于平衡状态。 ■(Economics)a situation in which supply and demand are matched and prices stable (经济)(供求)均衡
派生 equilibrial adjective 语源
early 17th cent. (in the sense 'well-balanced state of mind'): from Latin aequilibrium, from aequi- 'equal'+ libra 'balance'