and in return, humans could reap the rewards. 作为回报 人类可以收获果实
but for those that do, there can be great rewards. 但风险越高 收益越高
The rewards of living in a city can be huge. 生活在城市中好处良多
and the rewards for the effort can be disappointing. 努力捕食却往往空手而归
Having survived the dry, barren times, animals can now reap the rewards. 经历了干旱贫脊之后 动物们现在可以享受成果了.