本期内容：

Celebrating the birth of his first child, Mark Zuckerberg, the chief executive of Facebook, promised to put 99% of his shares in the company (worth around $45 billion at today’s prices) into a charitable foundation. His lengthy letter announcing the plan, published on Facebook on Tuesday, quickly won more than 1m “likes”. Mr Zuckerberg will retain a controlling stake.

词义解析:

charitable foundation: 慈善基金

lengthy letter: 长信

retain：保有

controlling stake: 控制权股票