Verb:

1. display excessive cordiality (towards);

   "he is always backslapping his colleagues at staff meetings"
   

Backal口腔锭backn.后面；背脊；靠背；后背；后卫vt.支持；后退adv.向后地adj.向后的；后面的；偏远的；过时的；积欠的backing-off铲,退绕back breaking劳累至极的backslash key反斜线键back and fillvi.看风使舵前进以避开障碍(反复无常)back-boilern.热水器backspin roll传动托棍back stabbing暗箭伤人back of knife刀背back sb. up给某人撑腰打气backstop tone后定位夹钳