Which part of a spinach plant do we eat?

我们吃菠菜的哪一部分？

The key to these super-sleuthing spinach plants are carbon nanotubes in their leaves, which are designed to detect whatever chemicals the researchers want.

这些超级侦查菠菜植物的关键是它们叶子中的碳纳米管，这些碳纳米管旨在检测研究人员想要的任何化学物质。