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最佳答案:When standing on its rear legs,a panda can be as tall as one and a half meters.因
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最佳答案:Mantis shows this strange appearance, I'm sure, you've never seen. Mantis its wi
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最佳答案:1. place the sample on a flat surface2. set the microscope straightly with hands
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最佳答案:1)place the sample on a flat surface.2) Manually install the microscope, object