microbe|microbes

这种微生物在显微镜下看起来很小，却能引起严重的疾病。

This ___microbe looks tiny under the microscope but can cause serious illness.

医生用显微镜观察病人体内的微生物。

The doctor examined the ___microbes in the patient's body under a microscope.

医生建议勤洗手以防止有害微生物的传播。

Doctors recommend washing hands frequently to prevent the spread of harmful ___microbes.