Extensional
a. 外延的, 事實的, 具體的, 客觀現實的\\n[計] 擴充的, 擴展的, 外延的
??? 情景例句
Where are you going during Summer vacation?
暑假你打算去哪兒？
I also want to express my gratitude to all of my teachers over the years.
另外，我還想感謝這個多年來所有教過我的老師。
It's up to you.
由你決定。