equilibrium

In chemistry, a state of equilibrium is reached when the concentrations of reactants and products remain constant.

(Chinese) 在化学中，当反应物和生成物的浓度保持不变时，就达到了平衡状态。

The ear plays a crucial role in maintaining the body's physical equilibrium and sense of balance.

(Chinese) 耳朵在维持身体的物理平衡和平衡感方面起着至关重要的作用。