equilibrium
/ˌiːkwɪˈlɪbrɪəm/noun
(pl. equilibria/-rɪə/)［mass noun］
1- a state in which opposing forces or influences are balanced平衡; 均衡; 均势：
the task is the maintenance of social equilibrium.
任务就是维持社会平衡。
1.1
- a state of physical balance身体平衡：
I stumbled over a rock and recovered my equilibrium.
我被一块石头绊了一下, 然后又恢复了身体的平衡。
1.2
- a calm state of mind（心情的）平静; 心理平衡：
his intensity could unsettle his equilibrium.
他的烈性可能会搅乱他的心理平衡。
1.3
- 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：
ice is in equilibrium with water.
冰处于与水的平衡状态。
1.4
- Economics a situation in which supply and demand are matched and prices stable【经济】（供求的）平衡。
派生词
equilibrial
adjective词源
early 17th cent. （in the sense 'well-balanced state of mind'）： from Latin aequilibrium, from aequi- 'equal'+ libra 'balance'.