The results stated that:the cost of cocoon production has showed first increasing then decreasing;

结果表明：近二十年来浙江省蚕茧生产成本呈先增长后下降的趋势；

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A trend of total fluorescence intensity first increasing and then decreasing was showed with the time.

总荧光强度随时间呈现先升高后降低的趋势。

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With the technological and other key elements remaining the same, their marginal income is increasing first and then decreasing gradually.

在技术水平和其他要素的投入不变的情况下，边际收益是先递增后递减。

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Over the last twelve months, there has been some volatility with consumer confidence, spiking after holiday sales and then decreasing again this past spring.

FORBES: (Slightly) Decreasing Confidence All Around

The power then oscillates, decreasing slightly before increasing in steps that last between 10 and 100 trillionths of a second.

FORBES: A Nuclear Hybrid

If enough people are vaccinated, then an ever-decreasing number of mosquitoes will carry the parasite on to new victims.

ECONOMIST: Science: A fight to the death | The