The improvement of the productive powers of labor, and the greater part of the skill, dexterity, and judgement with which it is anywhere directed or applied, seem to have been the effects of division of labor.
RNA干扰是一个迷人的过程，它为理解基因调控开辟了新的途径，并具有潜在的治疗应用。
Positivity transforms us for the better. By opening our hearts and minds, positive emotions allow us to discover and build new skills, new ties, new knowledge, and new ways of being.
"Literature is the mirror of society, reflecting its beauty and its flaws."
Always think big and don't listen to people who tell you it can't be done.
你连自己都管不好，怎么能治理国家的正事呢？