Appurtenant
a. 附属的, 从属的\\nn. 附属物
✅ 同义词
🗣️ 情景例句
I know the owner very well.
我和老板很熟。
Who is the auther of this play?
谁是这戏剧的作者？
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）。