Even caffeine, which is generally known only for its stimulatory effects, displays this property, depressing mouse locomotion at very low concentrations and stimulating it at higher ones.

就连人们通常觉得有刺激作用的咖啡因，也表现出了这种特性，它在浓度极低的情况下会抑制老鼠的运动，而在浓度较高的情况下则会刺激老鼠。

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Reduced glutathione has no stimulatory effect on the enzyme activity.

谷胱甘肽对酶活力无激活作用。

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It is their medium and utilization of complex verbiage creates essential stimulatory excitation for them.

这是他们的传播媒介，同时他们也利用复杂晦涩的词句给自己创造必要的刺激。

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Importantly, the drop in bond yields in the U.S. and Germany, and the already-low government bond yields in Japan, suggest the monetary policies of the U.S. Federal Reserve, the European Central Bank and the Bank of Japan will remain aggressively stimulatory for at least the next several months, if not longer.

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