I have called this principle， by which each slight variation， if useful， is preserved， by the term Natural Selection.
我已将这一原则——每一微小变异若有益便被保存——称为自然选择。
真相很少是纯粹的，也从不简单。
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.
A thriving forest is a testament to both nature’s resilience and human stewardship.