ononeoccasion是什么意思（occasionally这是什么意思）

on one occasion[英][ɔn wʌn əˈkeiʒən][美][ɑn wʌn əˈkeʒən]曾经，有一个时候; 例句:

1.On one occasion, we went back to the empty house she had shared with her husband. 曾经有一次，我们回到了她和她丈夫共有的空无一人的房子。

2.I met him only on one occasion. 我只见过他一次。