常规液体里分子之间的键合力相对较弱。The molecules in regular liquids are held together by relatively weak bonds.粘阻力等于合力.The viscous drags is equal to the resultant force.在这个和那个方向上的合力必定为零.The summations of forces in this and that direction...
The spectators were wilting visibly in the hot sun.看得出观众在炎热的阳光下快支撑不住了。The petunias were already wilting in the hot sun.在烈日下矮牵牛花已经开始枯萎了.Pale wilting roses drooped from a blue vase.泛白凋零的玫瑰从蓝色的花瓶里耷拉下来。Vibrant colors last ye...