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mùlù
yīngwénjièshì
  1. :  in passing,  by the way,  en passant
  2. n.:  while you are [I am, he is] about it,  drop over (to),  by way of parenthesis,  while you are about it,  in passing; at one's convenience
  3. adv.:  incidentally,  obiter,  passingly,  between
fǎwénjièshì
  1. adv.  en passant
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