Mulde
向斜层, 凹地
🗣️ 情景例句
He was ill at ease with people whom he didn't understand.
他和不熟悉的人在一起感到不自在。
No! Yum, gorge, glut.
不行，嚼嚼！你这讨厌鬼。
Happy birthday! he said. Here's your present.
“生日快乐！”他说，“这是给你的礼物。”