煤炭仍将是重要的能源，但前提是我们与时俱进。
Coal will remain a vital energy source, but only if we evolve with the times.
光波，无论是以太波还是其他波，在所有情况下都是时间上的周期性过程。
The best thing about getting older is that you don't lose all the other ages you've been.
Sustainable development requires balancing economic benefits with environmental protection.
Innovation is not just about creating something new; it's about solving real problems in ways that matter.
