Rattly
a. 格格响的, 吵闹的
🗣️ 情景例句
Pleased to meet you.
很高兴遇见你 。
I've realized that we should stop the pollution.
我明白必须阻止公害的原因了。
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）。