论文部分内容阅读
Necessity is the mother of invention. 需要是发明之母。Caution is the mother of security. 谨慎乃安全之母。Diligence is the mother of success. 勤奋是成功之母。
Necessity is the mother of invention. Caution is the mother of security. Caution is the mother of safety. Diligence is the mother of success. Diligence is the mother of success.