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来源:雅诚德英语网
If their population is tracked through time, it will be seen to be particularly unstable—soaring and plummeting in irregular cycles.
如果对它们的数量进行时间记录,就会发现它是很不稳定的——以不规则的周期急剧上升下降。
If their population is tracked through time, it will be seen to be particularly unstable—soaring and plummeting in irregular cycles.
如果对它们的数量进行时间记录,就会发现它是很不稳定的——以不规则的周期急剧上升下降。