趋势图表明夏季、秋季更高，表明在温暖季节咬尾发生率会提高。

Prevalence tended to be higher in the summer and autumn, pointing to more tail biting during warmer weather.

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使用时间图表——根据时间所有这些量度都可以画为图表趋势，例如，应该积极地调查表示修复缺陷工作稳定增长的趋势。

Using time charts — All these metrics can be plotted against time to chart trends. For instance, a trend showing a steady increase in effort to fix defects should be vigorously investigated.

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同时我也画了一些基本的图表来显示趋势。

I also created some basic graphs to show trends.

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