Boffetta explains that this aspect of the study design could "be an explanation of the weak effect we found."

Boffetta解释这一方面的研究设计也“可能解释我们所发现的微弱的效果。”

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The experiment indicates that wind itself is of weak effect on ground surface erosion, so that the soil crust may not be destroyed even under great wind velocity.

实验表明：净风对土表的风蚀作用微弱，即使在遭到大风吹刮时，土表的结壳仍不易受到破坏。

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As co-integration test reflects regulation between international trades and real exchange rate, correction mechanism suggests certain counter-regulation effect on export and weak effect on import.

协整检验揭示国际收支与实际汇率之间存在协整关系，误差修正模型揭示对出口额的波动具有一定的反向调节作用，而对进口额的反向调节作用则很微弱。

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For example, one effect of a weak economy is less demand for office space.

VOA: special.2009.09.04

But, the uppermost effect size difference was weak, 0.22, which is similar to the effect size mentioned for adults.

FORBES: There Are No Silver-Bullets in Education Reform

That is because the CO2 greenhouse effect is weak and marginal compared to natural causes of global temperature changes.

FORBES: To The Horror Of Global Warming Alarmists, Global Cooling Is Here

The BCC estimates that the economy grew by 0.3% in the second quarter of 2011, and it is concerned about the effect that weak growth in the rest of the world will have on UK exporters.

BBC: UK economy recovering too slowly, BCC says