让儿童参与工作，能增强他们对生活环境的责任感。
Security and privacy are fundamental to the trust that users place in the Internet.
I'm mentioning all this -- I'm mentioning all this because I think this is not merely a personal problem; you may think I'm wrong in this, but I think we live in an age when our lives are regularly punctuated by career crises, by moments when what we thought we knew -- about our lives, about our careers -- comes into contact with a threatening sort of reality.