What you actually pay for something is at least twice the listed price because of the energy， time， money needed to set it up， learn， maintain， repair， and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.

I've always been fascinated by the idea of transformation, both physically and emotionally.

The mind is the organ of biological intelligence.

跨学科的合作对于解决科学中最具挑战性的问题至关重要。