树木在微风中发出的沙沙声the sound of the trees rustling in the breeze树叶柔和的沙沙声the soft rustling of leaves这部优良的发动机全速开动时也只发出一点点沙沙声.This fine engine makes only a whisper when running at full speed....
空气中悬浮的粒子,由于相互凝聚也会在大小和形状方面发生变化.Airborne particles can also be changed in size and shape by coagulation with each other.进入悬浮的泥沙数量取决于河床上的流体的作用力.The quantity of material that goes into suspension depends on the fluid forces ...
People were visiting the house every day, sometimes in unmanageable numbers.每天都有人来参观那栋房子，有时人多得都无法控制。The signs are that indulged children tend to become unmanageable when they reach their teens.这些迹象表明被宠坏的孩子在十几岁的时候往往会变得难以管...