Permanentness
n. 永久, 不變, 持久, (美)電燙的頭發, 卷發, 化學燙的頭發
??? 情景例句
Your dad is quite a guy.
你爸爸真不賴。
I hope you have a good trip.
祝你旅途愉快。
The tunnel would be well-ventilated if tall chimneys were built above sea level.
隧道就具備了良好的通風條件。