Faculative
a. 允许的, 任意的, 兼性的, 偶发的
🗣️ 情景例句
and I can give you and Mrs. Stewart a month of classes free.
我让你和你太太免费上一个月的课。
Hawaiians are used to the rumblings of the volcano.
夏威夷的人已经习惯于火山的爆发声了。
If I were you, I wouldn't have bought that vase.
如果我是你，我就不买那花瓶。