上生物课时，我们经常用显微镜观察细胞。

We often use microscopes in biology class to observe cells.

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一台显微镜可以显示出一滴水中大量的生物。

A microscope can show a great many living creatures in a drop of water.

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课程包括生物化学，应用数学，实验室程序及安全，显微镜的使用方法等。

Course work covers biochemistry, applied math, lab procedures and safety, and the use of microscopes.

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就如同我们人，不用显微镜就看不到微生物；

People have to use microscope to watch microbe.

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就如同我们人，不用显微镜就看不到微生物；

People have to use microscope to watch microbe.

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