副詞 thereby:

1. by that means or because of that

1. Styled with distinctively rounded edges so as to reduce wind drag and thereby increase fuel efficiency. Used especially of automobiles and vans.
   流線型的具有獨特圓邊款式以減少風(fēng)阻從而提高燃料效率的，用以特指汽車或輕型汽車的款式
2. He became a citizen, thereby gaining the right to vote.
   他成為公民，并因此獲得了選舉權(quán)。
3. Thereby hangs a tale.
   其中必有文章。