单词	air entrance
释义	air entrance 含气量
随便看	cover the bed with the counterpane or bedspread Cover the burn with an antiseptic dressing Cover the burn with a sterile gauze bandage cover the case Cover the chicken loosely with foil cover the conference cover the cost cover the costs C.Over the course of the school year cover the damage to cover the deficit cover the difference by cover the distance cover the expenses covertheground cover the ground cover their track cover the landing of an army cover the locals cover the loss cover the moon Cover them with salt cover the news cover the position cover the retreat