To force ( air ) upward from Earth's surface, as when front overtakes and undercuts warm front.使(气旋等)锢囚迫使 ( 空气 ) 从地球表面上升, 如在冷锋压过并削弱暖锋时.Because it rarely involves praise and frequently employs criticism, it undercuts...

undercuts的音标：...

v.削弱( undercut的第三人称单数 )，以低于（竞争者）的价码出售货物或提供服务，接受较低工资与…抢工作...