theretofore

英汉释义

• adv.

  1.那时以前,直到那时

英英释义

• adv.

  1.before or up to that time

英汉例句

• 1.they had not done any work theretofore.

  知道那时他们都没完成任何任务。

• 2.and introduced an element of strength and flexibility theretofore unachievable.

  介绍了一种元素相关的强度和韧性不成立。