ADVERB | PREPOSITIONADVERB➤thoroughly, well嚼爛;細嚼▸➤slowly, thoughtfully慢嚼;若有所思地嚼▸➤up嚼碎◇Chew your food up thoroughly before you swallow it.食物完全嚼爛後再咽。PREPOSITION➤at咬⋯◇She was chewing at her lower lip.她咬着下嘴唇。➤on咀嚼⋯◇The baby chewed on a piece of bread.寶寶嚼着一塊麪包。