zài / xiǎn / wēi / jìng / xià / huā / sī / hé / huā / yào / de / jié / gòu / dōu / hěn / qīng / chǔ

在显微镜下，花丝和花药的结构都很清楚。

Under the microscope, the structures of the filament and anther are both clear.