noun 下载 🔗分享 壳斗, 小杯状体 Any small structure shaped like a cup, such as at the base of an acorn, or the sucker on the feet of some flies Examples : "The tiny cupule at the base of the acorn held a drop of water. " 橡子的底部,那个小小的壳斗里积着一滴水。 biology nature anatomy animal insect plant structure part 与AI对话词汇游戏阅读练习