When we did the spring, we had this theory of Hooke's Law that told us something, and we built a simulation, or built some tools around that theory.

当我们写弹簧程序的时候,我们有胡克定律来告诉我们原理，然后我们建立了一个仿真模型，或者说是在这个理论基础上建立了一些工具。

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but we have a lot of races in the spring.

但是我们在春季有很多比赛。

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We don't know what the force of the spring is.

我们不知道弹簧的力多大

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Then right around the lows in the spring of 2009 we saw the first glimmer of life return to the IPO market.

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For as we mark the turning of spring, we also mark a new season in America.

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The Internet bubble had burst in the spring of 2000, and we were in the midst of a bear market in stocks.

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