Unascertainable
a. 无法查明的,不能确定的
✅ 同义词
🔴 反义词
🗣️ 情景例句
How do I do that?
我该办什么手续呢？
His working is behind schedule.
他的工作比预定的进度落后了。
We'll have to get this contract typed as soon as possible.
我们得尽快把契约书打出来。