加膝：抱在膝上；坠渊：推下深渊。喜欢就抱在膝上，不喜欢就推到深水里。比喻用人爱憎无常。
either to add somebody to one's knees or throw him into the abyss
加(jiā)
膝(xī)
坠(zhuì)
渊(yuān)
