However, a lighter, "warm" dark-matter particle would make only big clumps and therefore might explain the lack of galaxies at the low-mass end.

然而，较轻的“温”暗物质粒子只会形成大型物质块，因此可以说明超出这个最低质量限度时就不存在星系。

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However the researchers can? T be absolutely sure that the two signals they measured were dark matter and not some other particle, which they call background.

但研究者们还是不能绝对确信他们所测到的两个信号跟暗物质有关，因为有可能是背景的其他粒子干扰所致。

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To see dark matter, said Dr. Barish, scientists will have to build the world's biggest particle accelerator.

巴里什博士说，要想看到暗物质，科学家们必须要建造世界上最大的粒子加速器。

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