气流分离移动的流线型的躯体上流体边界层上的分隔物，如飞机的机翼，在平滑的流体流动中会引起故障和湍流 A separation in the boundary layer of fluid about a moving streamlined body, such as the wing of an airplane, causing a breakdown in the smooth flow of fluid and resulting in turbulence.
粘滞性的对流动有较高抵抗力的 Having relatively high resistance to flow.
电在（电路[导线]中）流动。 Electricity is flowing (in the circuit/wires).
