乳制品生产成功的关键在于平衡效率与动物福利。

If you want to understand function, study structure.

Handy measure: the distance between your fingertips of your outstretched arms at shoulder level is your height.

永远不要低估一个精心设计的实验的力量。

能源转型不仅仅是取代煤炭的可再生能源，而是确保工人和社区的公正转型。