sleet /ˈslit/
 雨夾雪(vi.)下雨雪,下冰雹
 Sleet, n.  Hail or snow, mingled with rain, usually falling, or driven by the wind, in fine particles.
 Sleet, v. i. [imp. & p. p. Sleeted; p. pr. & vb. n. Sleeting.] To snow or hail with a mixture of rain.
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 Sleet n. Gun. The part of a mortar extending from the chamber to the trunnions.
 sleet
      n : partially melted snow (or a mixture of rain and snow)
      v : precipitate as a mixture of rain and snow; "If the
          temperature rises above freezing, it will probably sleet"