noun 下载 🔗分享 底面，下表面 The underneath surface; the bottom, or underside Examples : "The ants built their nest in the soil clinging to the undersurface of the large paving stone in the garden. " 蚂蚁把它们的巢筑在花园里那块大铺路石的底面，也就是贴着石头下面的泥土里。 part appearance area 与AI对话词汇游戏阅读练习
