青年中文no one knows for certain的意思
no one knows for certain中文翻譯：
沒有人確切知道
for certain───肯定地；確鑿地；無疑地， 確定地
for no one───不為任何人
for knows photos───for knows照片
one no one───一個沒人
no one no no───沒人不不不
knows───v.知道（know的第三人稱單數形式）
no one───n.沒有人
certain───pron.某些；某幾個；n.(Certain)人名；(葡)塞爾塔因；(法)塞爾坦；adj.某一；必然的；確信；無疑的；有把握的
one for one───一對一
According to Peter Sandiford of the Liverpool School of Tropical Medicine, no one knows for certain.───據利物浦熱帶醫學院的彼得·桑迪福德說，沒有人確切地知道。
No one knows for certain how the solar system began.───沒有人能確切知道太陽系是如何形成的。
No one knows for certain the origin of the holiday.───沒有人確切知道這一節日的來源。
No one knows for certain when the stock market is at an absolute bottom, so you shouldn't waste time trying to guess when that bottom is.───沒有人確信知道股票市場什么時候處于絕對谷底，所以你不應該浪費時間去猜測何時是谷底。
Why was he forced to leave native place according to the passage? No one knows for certain.───為什么他被迫離開故里據襲？沒有人知道確切的答案。
No one knows for certain what happened, but it's a fair bet that it was not an accident.───沒有人知道究竟發生了什么，但幾乎可以肯定這并非意外。
No one knows for certain why they like to nest at electrical substations and in utility poles.───無人能夠確切地知道它們為什么喜歡在變電站和電線桿上筑巢。
eg. No one knows for certain how many refugees wander the world today, or languish in camps without a permanent place of settlement.───無人清楚如今有多少難民在到處流浪，或有多少人流離失所，在難民營里受苦。
No one knows for certain how many refugees wander the world today, or languish in camps without a permanent place of settlement.
What the purpose of the paintings was, no one knows for certain.