医生在显微镜下观察到了几个圆形球菌。

The doctor observed several round ___coccus bacteria under the microscope.

园丁发现植物叶片上有一些圆形的小虫，怀疑是球蚧在吸食汁液。

The gardener found some round tiny insects on the plant leaves, suspecting they were ___coccus feeding on the sap.