Faculative
a. 允许的, 任意的, 兼性的, 偶发的
🗣️ 情景例句
How'd you guess?
怎么晓得？
Saying and doing are two things.
说与做是两回事。
I entered the hotel manager's office and sat down.
我走进饭店经理的办公室，坐了下来。