口子: hole, opening, cut, gap, gash, my husband or wife, classifier for people (used for indicating the number of people in a family etc), precedent...
阀门: valve (mechanical)...
口罩: mask (surgical etc)...
退役: to retire from the military, sport etc, to demobilize, to decommission, retired from use...
投机: to speculate (on financial markets), opportunistic, congenial, agreeable...
没意思: boring, of no interest...
微博: microblogging, microblog...
压迫: to oppress, to repress, to constrict, oppression, stress (physics)...
收复: to recover (lost territory etc), to recapture...
白领: white-collar, white-collar worker...
