lose heart:be discouraged丧失勇气（信心），灰心

lose one's heart to sb./sth. : fall in love with... ;become very fond of...倾心于某人，十分喜爱某人或某物

lose one's heart＂因……而心碎＂

①Disney did not lose heart.迪斯尼并没有灰心.

②Mike has lost his heart to Kate.迈克已经爱上凯特.

③The young man almost lost his heart when he heard that his girlfriend died in the accident.当听说他的女友死于那起事故时，那个小伙子的心都碎了.