回答

・the future is a closed book
・nobody knows what the future holds

有句話說「前途一片黑暗」用英文可以 the future is a closed book表達。
或者，我認為可以表達為 nobody knows what the future holds 。

I don't know what will happen to my life and company because the future is a closed book.
（前途一片黑暗，所以人生和公司的未來都難以預測呢。）

有幫助｜0