Nhis
[医][=National Health Information Service]国家卫生情报局
🗣️ 情景例句
He tried to smile.
他设法要微笑。
Better luck next time.
下次好运吧！
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）