They must depart. 必须离开了

38. Yet the male is reluctant to leave.
    然而雄鸵鸟并不准备离开此处
39. Some of the eggs have still not hatched.
    因为仍有些蛋没有孵化出来
40. But time has run out.
    然而时间已经所剩无几
41. They must depart.
    必须离开了
42. Just a few minutes too late.
    就差了几分钟没赶上
43. Alone and without the protection of its parents,
    缺少了父母的保护
44. this hatchling's chances are slim.
    这只雏鸟的生存机会十分渺茫

来自《行星地球 第三季 第三集 Planet Earth S03E03 沙漠与草原》第 41 行