scud /skAd; skAd/ vi (-dd-) [VP2A, C] go straight and fast, with smooth motion: (平穩(wěn)地) 疾行; 飛馳： The clouds ~ ded across the sky. 云從天空飛過(guò)。 The yacht was ~ ding along before the wind. 那游艇正乘風(fēng)向前疾行。 n [C] act of ~ ding; [U] vapoury clouds driven by the wind. 疾行; 飛馳; 飛碎雨云。