Unascertainable
a. 无法查明的,不能确定的
✅ 同义词
🔴 反义词
🗣️ 情景例句
Grandma, I bet you have a lot of stories to tell.
奶奶，我敢打赌你会说很多故事。
Behind bad luck comes good luck.
塞翁失马，焉知非福。
A girl came in and put an envelope on his desk.
一个姑娘走了进来，把一个信封放在了他桌上。