Laccaic acid
[化] 紫胶色酸; 虫胶色酸
🧩 词语组成解析
🗣️ 情景例句
It is a great idea,
这是个极好的主意。
He is a gentle horse that never cast his rider.
驯良的马绝不会把骑手甩倒。
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）。