Grina格里纳grinv.露齿而笑；(以咧嘴笑来)表示n.露齿笑；咧嘴笑grin like a Cheshire catv.常常无缘无故地傻笑grin like a Cheshire catev.常常无缘无故地傻笑grin-to-grain boundary晶粒间grin through a horse collar把头从马颈圈伸出互作鬼脸grin through a horse-collar把头伸进马颈圈作鬼脸的游戏,硬充滑稽; 开粗俗的玩笑