Thrumming
v. 指弹( thrum的现在分词 ); 敲打; 乱弹; 轻敲
🗣️ 情景例句
He's your best man.
他是男傧相呀。
Knowledge is the antidote to fear.
知识可以解除恐惧。
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）。