Petrocodon
石山苣苔属
🗣️ 情景例句
Oh, well, that would be very nice.
噢， 好吧， 那倒很好。
Extremes are dangerous.
物极必反。
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。