Tetradynamia
四强雄蕊群
🗣️ 情景例句
using as many letters as possible.
尽可能多用字母，
It was a six-hour flight.
它要6小时的飞行。
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）。