Sinuses
湾, 穴, 窦, 窦房结, 窦道, 鼻窦, 瘘, 瘘管
🗣️ 情景例句
Since I retired,
自从我退休以后，
A clear conscience is a sure card.
光明磊落，胜券在握。
The best time to come to China is in spring or autumn.
到中国来，最好的时间是在春天或者秋天。