Hardfern
n. 硬羊齿植物
🗣️ 情景例句
What have you learned from jobs you have held?
你从以往的工作中学到什么？
May I have a look at the watch?
我能看看这块表吗？
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）。