However, an experimental release of iron compounds into one such area failed to produce a thriving plankton population, even though local iron concentrations increased immediately.

然而，尽管当地铁浓度立即提高，在一个这样的区域实验释放铁化合物却没有产生大量的浮游生物。

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The 15 EU nations that use the single currency—the euro area—offer an additional experimental advantage.

15个使用单一货币（欧元）的国家提供了额外的实验优势。

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The study used an experimental model of brain damage, in which mice are exposed to a chemical that destroys the hippocampus, an area of the brain which controls learning and memory.

该研究应用了脑损伤的试验模型，该试验中，使小白鼠接触一种能破坏控制学习和记忆的海马体的化学物质。

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Seasonal was considered to be such an experimental area that it was agreed that no-one would want to be judged in that category.

BBC: News - Today - BBC Weather Test: Setting course

Intriguingly, Dr Balch's experimental area is part of an 80, 000-hectare holding owned by the family of Blairo Maggi, a soyabean magnate who is the governor of Mato Grosso.

ECONOMIST: A new experiment is setting the Amazon on fire

Earthquake experts from the British Geological Survey said that the 1.5 magnitude quake last week was similar to a 2.3 earthquake in April in the same area and that both may be linked to the experimental fracking for shale gas at Preese Hall on the Fylde coast.

FORBES: Shale Fracking Causes Earthquakes