我们应该常学以撒的样，从热闷的生活中出来，到田间去默想。

City men cannot do better than follow the example of Isaac, and, as often as they can, get away from the fret and fever of life into fields.

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金融学中我们常假设随机变量,例如收益率,是服从正态分布的

We often assume in finance that random variables, such as returns,are normally distributed.

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杰克伦敦早年没有一个安稳的家，经常搬来迁去，住在出租房里，从圣弗朗西斯科到乌克兰，都有他的足迹。 虽然做童工，但也上过学，常光顾图书馆自修。

His early years were a series of moves between tenements in San Francisco and Oakland, child labour, but also schooling, public libraries, and self-improvement.

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