noun 下载 🔗分享 月沟, 槽沟 A long, narrow depression that resembles a channel, found on the surface of various lunar and planetary bodies. Examples : "The astronaut pointed out a prominent rille snaking across the lunar landscape. " 宇航员指着一条醒目的月沟,它像蛇一样蜿蜒横穿月球表面。 astronomy geology space 与AI对话词汇游戏阅读练习