股票资产不到中国家庭总资产的20%，美国则是占到了一半。因此，股价的波动对家庭开支影响也较小。

Equities account for less than 20% of Chinese households' total financial assets, compared with half in America, so price swings have less impact on spending.

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自基金成立以来的年化回报率为17.9%，而波动率仅为股市的一半。

Since inception, it's had 17.9% annualized returns with half the volatility of stocks.

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本文研究了半线性波动方程在非线性项和初值满足一定条件下解的存在性。

This paper studies the existence of solution for a semilinear wave equation under the nonlinear term and initial value satisfying certain conditions.

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