Arger
n. 喷雾器
🗣️ 情景例句
Something simple--but a good one.
要简单的，但要精美 。
It's not up to his usual standard.
这次没有达到他平时的水平。
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）。