Indefiniteness
无定性; 不定性
🗣️ 情景例句
Well, I guess your mother and I can manage it.
嗯， 我想你妈和我可以设法帮这个忙。
What do you think of my children?
你认为我的孩子怎么样？
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？