马尔萨斯观察到人口数量总是保持在可控制的范围，因为并非每个个体都有机会繁衍后代的。

Malthus observed that population was held in check because not every individual would survive to reproduce.

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诚实的表达你的感受是缓解这一问题的要点。简单而言，尽力让这一问题保持在可控制的范围内。

Expressing your real feelings honestly is essential with this aspect. Simply try to keep it under control.

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然而，除了1999年和2002年的大规模发病以外，通过加强预防活动，霍乱始终保持在可控制范围内。

However, with the exception of the large outbreaks that occurred in 1999 and 2002, the disease has been kept under control through intensified prevention and preparedness activities.

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