There was a faint, hardly perceptible movement of the water as the fresh flow from one end urged its way towards the drain at the other.
当新鲜的水从一端涌向另一端的排水沟时，有一股微弱的、几乎难以察觉到的水流。
2
When the current applied by the gate is high enough, electrons flow through the channel between the source and drain electrodes.
当由栅极施加的电流足够强的时候，电子会在源极和栅极之间进行流动。
3
Inversions can help clear the upper respiratory tract and drain secretions from the nose, allowing freshly oxygenated blood to flow into the oral cavity.