Sinuses
湾, 穴, 窦, 窦房结, 窦道, 鼻窦, 瘘, 瘘管
🗣️ 情景例句
I think you might be amused.
我想你可能会觉得有趣。
He realized that he was heading in the wrong direction.
他意识到走错了方向。
Letter
4第四封信