He mistakenly ascribes the expression "survival of the fittest" to Charles Darwin.他错误地认为“适者生存”是查尔斯·达尔文说的。Natural selection ensures only the fittest survive to pass their genes on to the next generation.自然选择确保只有最适应环境的物种得以...
他停下脚步试着让眼睛适应微弱的星光。He stopped to try to adjust his vision to the faint starlight.天空一片深蓝色，其间星光闪烁。The sky was deep blue and starry.我们借着星光走回家。We walked home by starlight....