通过增加光线来研究两种类型的恐惧反应，研究人员发现有杆状体和视锥的图像成像通道可以调节恐惧的反应。

By indexing the two types of fear reactions in the presence of increased light, the researchers learned that the image-forming pathway of the rods and cones had the modulating effect on fear.

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埃德温·温特·姆特(Edwin Wintermute)和他在哈佛的同事已经通过基因工程改造了酵母细胞，在产生麦角酸——LSD的前体——的六步反应路径中已经实现了其中的两步。

Edwin Wintermute and his colleagues at Harvard have engineered yeast cells to carry out two of six steps in the pathway needed to make lysergic acid, the precursor of LSD.

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通过实验研究了一体化自然循环反应堆压力壳上部自稳压气空间对于自然循环两相流系统启动过程中流动稳定性的影响。

The influence of the gas space on the top of an integral reactor vessel on the flow stability in the start up process of a natural circulation two phase flow system is studied experimentally.

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