lostadj.迷路的；丢失的；错过的；失败的；不知所措的；摧毁的；被杀死的；忘我的；不能理解的动词lose的过去式和过去分词形式Lostale洛斯塔莱

1. It is lost labour to sow where there is no soil.
   没有土壤，播种也是徒劳。
2. He had tried vainly and lost his heart at last.
   他徒劳地尝试，终于失去了信心。