With toxic friends we wither, sometimes knowingly other times unknowingly, but regardless the deteriorating effect is still the same.

和损友在一起，我们会凋谢，无法捉摸，对不断恶化的后果不管不顾。

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Inventory model of deteriorating items with deterministic time of effect under general demand is proposed to find the optimal solution under linear demand.

给出一般需求下有保质期的变质性物品的存贮模型，求得线性需求时的最优解。

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Aid agencies have often criticised the PRTs, which carry out a mix of reconstruction work, as an inadequate response to deteriorating security - an "Isaf effect" without the means or the mandate.

BBC: NEWS | South Asia | Afghanistan's security nightmare

To the extent that this equation (energy return on energy invested, or EROI) is deteriorating, that must surely have an effect on economic growth.

ECONOMIST: The economic impact of high oil prices

But the main reason why so many people have such trouble reconciling improving or deteriorating economic data and stock market conditions is the Recency Effect.

FORBES: Think 1938, Not 2008