bit

少量, 马嚼子, 辅币

a small fragment of something broken off from the whole; piece of metal held in horse's mouth by reins and used to control the horse while riding; a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states; the part of a key that enters a lock and lifts the tumblers

给马上嚼子, 控制

bite的过去式和过去分词