It also could have given early humans and other nonhuman primates the benefit of distinguishing ripeness and toxicity in foods such as fruits and plants.
对红色的敏感可以让早期人类和其它灵长类更容易区分植物性食物的成熟程度和毒性。
2
Harvested at early grape ripeness and cool maturation in steel tanks to retain fruit freshness.