an unpleasant feeling caused by the realization that something unpleasant or undesirable has happened or is about to happen
（因意識到已發(fā)生或?qū)⒁l(fā)生不愉快、討厭的事情而引起的）頹喪感
fail or succeed entirely by one's own efforts
完全靠個(gè)人努力決定成功與否
To succeed or fail without alternative.
或成或敗，毫無選擇