equilibrium
noun /ˌiːkwɪˈlɪbriəm/,  /ˌekwɪˈlɪbriəm/
  /ˌiːkwɪˈlɪbriəm/,  /ˌekwɪˈlɪbriəm/
 [uncountable, singular]- a state of balance, especially between different forces or influences 平衡;均衡;均势 - Any disturbance to the body's state of equilibrium can produce stress.对身体平衡状态的任何干扰都可能产生压力。 
-  in equilibrium The point at which the solid and the liquid are in equilibrium is called the freezing point.固体和液体的平衡点叫做冰点。 
- We have achieved an equilibrium in the economy.我们已在经济上达到平衡。 
 
- Any disturbance to the body's state of equilibrium can produce stress.
- a calm state of mind and a balance of emotions(心情、情绪)平静,安宁;心理平衡 - He sat down to try and recover his equilibrium.他坐了下来,努力恢复平静。 
 
- He sat down to try and recover his equilibrium.
词源early 17th cent. (in the sense ‘well-balanced state of mind’): from Latin aequilibrium, from aequi- ‘equal’+ libra ‘balance’.