在显微镜下观察紫罗兰 Brown
如果你在显微镜下观察这张纸，你就会看到纤维。
If you look at the paper under a microscope you will see the fibres.
当我们在显微镜下观察脏水时，我们会看到它们。
When we look at dirty water under the microscope, we shall see them.
他们将使用荧光标记法标记这些脑细胞，然后在显微镜下观察。
They will use fluorescent tags to label the cells in the brain, and look at them under the microscope.
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