we will make these materials ______ for people and the planet.
问题描述：
we will make these materials ______ for people and the planet.
答案是defined,我觉得comfortable,哪里不对?
答
we will make these materials defined for people and the planet.
直译:
我们要使这些材料成为对人类和我们这个星球有确定意义的材料.
转译:
我们要使这些材料对人类和我们这个星球有益.
comfortable 不如 useful or helpful好,因为对星球来说不好用comfortable
.