The strength of a nation's institutions is not just in their formal rules, but in the informal norms that govern behavior and the degree to which they are internalized by the population.
我变得疯狂，而在长时间的可怕清醒间歇中度日。
Coal has powered our past, but we must be honest about its role in our future.
我感到越不确定和不安，就越坚持绘画的念头。
不过话得说回来，没有一桩事是容易的。
The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells.