smoke-screen

n (a) clouds of smoke used to hide military, naval, police, etc operations 烟幕（用以掩护陆军、 海军、 警方等的行动的）. (b) (fig 比喻) action, explanation, etc designed to hide one's real intentions, activities, etc 障眼法（用以遮掩真实意图、 行动等的举动、 藉口等）: The export business was just a smokescreen for his activities as a spy. 他做出口生意只是为他的间谍活动打掩护.

smelliness, smelling-salts, smelly, smelt, smidgen (also smidgin), smile, smile at sb., smile on, smirch, smirk, smite, smith, smithereens, smithy, smitten, smock, smocking, smog, smoke, smoke-bomb (also `smoke-grenade), smoke-stack, smokeless, smoker, smokiness, smoking, smoking-jacket, smoking-room, smoky, smolder, smooch, smooth, smooth out, smooth over, smooth-tongued (also ,smooth-spoken), smoothie (also smoothy), smoothly, smoothness, smorgasbord, smote, smother,