基本解释n.下面adj.下面的同根派生 英汉例句用作名词 (n.)He imagined the ship dangling upside down on the undersurface of the Earth, the giant fingers of gravity holding them firmly in place.他想象着飞船吊在地球下面上下晃荡，巨大的引力手指把他们紧紧地抓在这个地方。