hap·haz·ard /(ˌ)hæpˈhæzɚ/
  偶然,偶然事件(a.)偶然的,隨便的(ad.)偶然地
  Hap·haz·ard n.  Extra hazard; chance; accident; random.
     We take our principles at haphazard, upon trust.   --Locke.
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  haphazard
       adj 1: dependent upon or characterized by chance; "a haphazard plan
              of action"; "his judgment is rather hit-or-miss" [syn:
               hit-or-miss]
       2: marked by great carelessness; "a most haphazard system of
          record keeping"; "slapdash work"; "slipshod spelling";
          "sloppy workmanship" [syn: slapdash, slipshod, sloppy]
       adv : without care; in a slapdash manner; "the Prime Minister was
             wearing a gray suit and a white shirt with a soft
             collar, but his neck had become thinner and the collar
             stood away from it as if it had been bought haphazard"
             [syn: haphazardly]