The greatest tragedy is not death, but forgetting one's mother tongue.
技术变革不是外生的；它是人们对市场激励做出反应而采取的有意行动的结果。
解释：对于一件事情的利害得失，只有有智慧的人才能分辨清楚。
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.