That means that there are no unstable pi bonds, so they tend to have longer shelf lives.

这意味着不存在不稳定的π键，因此它们的保质期往往更长。

Processed foods, with their long shelf lives and addictive flavors, have found a place on our plates.

加工食品因其保质期长和令人上瘾的味道而在我们的餐桌上占有一席之地。

The actual veggie content is often low, and they can be loaded with bloat-inducing soy, salt, fat, and preservatives for long shelf lives, which hardly makes them a health food.

蔬菜含量其实非常少，里面都是催生的膨胀大豆、盐脂肪和延长保质期的防腐剂，这些真的没办法合成健康食物。