Nonprecision
[航空]無精確下滑要求
??? 情景例句
You can't do that! it's against the rules.
你不能那么做！ 那是違反規定的。
I tried several times to call, but there is no answer.
我打了幾次，但是沒有人回答。
Excuse me.Where's the nearest bus stop, please?
請問，最近的公共汽車站在哪兒？