Recently, piracy happened frequently and took on a rising tendency.

近几年来，海盗犯罪案件频繁发生，而且有逐年上升的趋势。

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We are fully aware of the rising tendency of this product in the world market.

我们很清楚，这种产品在世界市场上的行情看涨。

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The results show that:1)Under a periodical pulsed heat generation, the temperature of borehole wall has a fluctuant rising tendency;

实验结果表明：1）在周期性脉冲热流的作用下，钻孔壁温度呈周期性震荡并逐渐升高；

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That tendency sharpened around four decades ago as rising crime became an emotive political issue and voters took to backing politicians who promised to stamp on it.

ECONOMIST: Crime and punishment in America

As stocks rally they become less undervalued and more overvalued and this tendency speeds up when the yield on the U.S. Treasury 30-Year bond is rising.

FORBES: Overvalued Fundamentals And Overbought Technicals Means It's Time To Look To Reduce Market Exposures