但是，在这个实验中，婴幼儿能够感知到这些面孔，即使把它们放置在婴幼儿视野的边缘。

In this experiment, however, the babies were able to perceive the faces even when they were located in the periphery of their visual field.

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研究人员希望能够饲养这种蚯蚓，把它们放置在被污染的土壤中，除去富含重金属的土壤。

The researchers hope it may be possible to breed the worms and distribute them around contaminated sites in the hope they can help rid the soil of heavy metals.

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为了做到这点，他们使用杀人现场的照片来安放桌椅等物品，把它们放置在谋杀发生时的地方。

To do this, they use photographs from the murder scene to set up tables, chairs and other objects just where they were at the time of the murder.

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