question mark

1. N-COUNT A question mark is the punctuation mark ? which is used in writing at the end of a question. 問號

Who invented the question mark?

誰發明了問號？

2. N-COUNT If there is doubt or uncertainty about something, you can say that there is a question mark over it. 疑問; 不確定性

There are bound to be question marks over his future. 他的未來肯定會有很多問號。