Flourosis
慢性氟中毒
🗣️ 情景例句
Would you kindly hold these keys, please?
请帮我拿一下钥匙。
I worked as an intern in that firm last summer.
去年夏天我在那家商行实习。
Though this caused great mirth among the guests, Aunt Harriet was horrified.
这件事引起了客人们的欢笑，但哈丽特却着实吓了一跳。