We must balance the need for energy with the need to protect our planet.
We have to be prepared to take some risks, but they must be calculated risks.
估计问题的性质与检验统计假设的问题不同。
Collaboration between governments, businesses, and society is essential to meet the dual challenge of energy demand and climate change.
The beauty of the olfactory system is that it is both simple and complex, allowing us to detect and discriminate an almost infinite number of odors.