Has anyone bothered to study the cumulative effect of all these things?

有谁费心研究所有这些东西的累积效应呢？

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For this reason, Chang'e 4 will study the effect of solar winds on the lunar surface and any mineral found by the spacecraft.

出于这个原因，嫦娥四号将研究太阳风对月球表面的影响，以及航天器发现的任何矿物。

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A new study has found the strongest evidence yet that smoke-free laws can reduce a major effect of tobacco smoking - heart disease.

VOA: special.2009.01.07

To sort out the confusion, Hashibe and her colleagues used statistical techniques to, in effect,make one big study out of the previous smaller studies.

VOA: standard.2010.06.30

The people in the study were part of a larger study on the effect of diet and lifestyle on cancer risk.

CNN: Daily chocolate may keep the heart doctor away

Fortunately, recently, professors Nick Bloom, Toby Kretschmer, and John van Reenen (from Stanford, the University of Munich, and the London School of Economics) conducted an extensive study examining the effect of family-friendly practices on hard variables such as firm sales per employee and return on capital employed, using a large database of firms from the US, the UK, Germany, and France.

FORBES: Are Family-Friendly Workplace Practices Worth Their Money? New Evidence

"It won't be a real campaign without late-night jokes, " says Darrell West, a Brown University professor and author of Air Wars, a study of television's effect on politics.

FORBES: Late-Night Campaigning