1. droop, sink, or settle from or as if from pressure or loss of tautness. 因为压力或失去拉紧的力而低垂、下沉或下陷。
2. For a string of specified length, tautness and density only certain notes can be generated. 一根确定长度、松紧和密度的弦只能发出某某音。
3. Relieves minor irritations like tautness and flaking to which sensitive and dry skin are prone. Nourishes the most delicate skin. 针对那些具有干燥和敏感性的皮肤，本品可有效解除皮肤干紧和脱皮的烦恼，并对大部分类型的皮肤具有保养滋润作用。
英英解释
n.
1. the physical condition of being stretched or strained
2. lack of movement or room for movement
