Although scientists have focused mainly on microcystins' biological effects, new evidence suggests that other potentially harmful substances also may be present.

生物科学家们大都在致力于微胱氨酸的研究，新发现表明尚有未识别的其他有毒物质存在。

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With continuing publicity about the need for healthful diets, and with new research about the harmful effects of eating too much sugar, nationwide demand for sugar will no doubt decline.

随着持续不断的有关健康饮食必要性的宣传，以及对食用过多糖份所带来的有害后果所作的新研究，全国范围内对糖的需求量将会下降。

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Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful biological effects.

4许多其他的新技术已经推出，使更多的研究，在试管中进行，看看是否会产生有害化学物质的生物效应。

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Harris Perlman says the best part of the new treatment is that there were no harmful or major side effects.

VOA: special.2010.03.16

The new findings concern scientists who see the study as further confirmation of the harmful effects of climate change on ecosystems.

CNN: Global warming threatens forests, study says

The new Tokyo government is hazarding to trigger currency and capital-flow movements that could as easily have harmful effects as helpful ones.

FORBES: Asia's Week: Bears Get an Edge in China Bet