They're making that because you need this protein insulin, it's a hormone, and it's important for sugar metabolism in your body.

它们产生胰岛素蛋白是因为你需要它,胰岛素是一种激素,它在糖代谢中起着非常重要的作用

耶鲁公开课 - 生物医学工程探索课程节选

It plays a big role in gravitation, in the Coulomb interaction.

它在引力和库仑力中都起着重要的作用

耶鲁公开课 - 基础物理课程节选