down and out 失业，不走运 例句： The bum was down and out on skid row.这个流浪汉是贫民区的一个失业者。 The writer was down and out, but he still went on with his writing.那个作家虽然已经穷困潦倒了，但他
no pains, no gains. 不劳无获 例句： A: Julia has won the special prize in the piano competition. B: She really did a good job. A: She sure did. As you see, no pains, no gains. A: 朱丽亚在钢琴大赛上获得了特别奖。 B: 她弹
fall behind 落后 例句： Students who are falling behind their peers at middle school may not necessarily lag behind them at college. 在中学落后于同班同学的学生到了大学就不一定比其他同学差。
