finding food is hard. 因此寻找食物非常困难

39. Once hapless underdogs,
    曾经不幸的弱者
40. they are now one of the few lucky survivors of Armageddon.
    如今成为巨灾中的少数幸存者之一
41. With most vegetation destroyed by the extinction,
    由于灭绝事件导致大部分植物毁灭
42. finding food is hard.
    因此寻找食物非常困难
43. But Lystrosaurus are resilient
    但是水龙兽坚韧不拔
44. and able to forage over large areas.
    而且能够在大♥片♥区域内觅食
45. They're constantly on the move,
    它们不断移♥动♥

来自《我们星球上的生命 第一季 第四集 Life on Our Planet S01E04 冷血动物》第 42 行