十分な時間があれば、彼らは教授に追加の説明を求めるだろう.

If they had enough time, they would ask the professor for additional explanations.

状況が異なっていれば、私たちは専門家に助けを求めるでしょう。

If the situation were different, we would ask the experts for help.

もし機会があれば、専門家に追加情報を尋ねるでしょう。

If you had the opportunity, you would ask the expert for additional information.