The reason, according to those ponderers, is that the genetic diversity promoted by sex is a protection against disease.
ECONOMIST: Asexual reproduction
The Kettering folk claim to be more than just ponderers.
ECONOMIST: American democracy: Building the perfect citizen | The
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。