tautness

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. Inspires feelings of comfort by leaving the face fresh, silky, vibrant, without any feeling of tautness.
   洗后面部倍感舒适、清爽、光华、亮泽不紧绷。
3. The squirrel can steer somewhat by moving its wrists and adjusting the tautness of its patagium.
   飞鼠可以通过活动腕关节及调整翼膜的松紧度来稍微改变滑翔方向。
4. A Study on the Degree of Tautness in a Skyline of a Cableway
   索道承载索张紧度的研究

noun

1. lack of movement or room for movement

   Synonym:    tightness

2. the physical condition of being stretched or strained
   1. it places great tension on the leg muscles
   2. he could feel the tenseness of her body

   Synonym:    tensiontensitytenseness