DICT.TW Dictionary Taiwan

 where·in /hwɛrˈɪn, hwær, wɛr, wær, (ˌ)(h)wɚ/
 (ad.)在何處,在其中

 Where·in adv.
 1. In which; in which place, thing, time, respect, or the like; -- used relatively.
    Her clothes wherein she was clad.   --Chaucer.
    There are times wherein a man ought to be cautious as well as innocent.   --Swift.
 2. In what; -- used interrogatively.
    Yet ye say, Wherein have we wearied him!   --Mal. ii. 17.
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 wherein
      adv 1: in regard to which; "a case wherein he took an active part"
      2: in the course or during which; "a period wherein he did not
         work"
      3: in which; where; "the particular state wherein you reside"
      4: in what; "wherein consists this matter?"