(noun.) microscopic unicellular marine or freshwater colonial alga having cell walls impregnated with silica.
阿加莎手打
双语例句
The great works of the ancients are in the main mere monuments of the patient manual labor of myriads of workers, and can only rank with the buildings of the diatom and coral insect. Edward W. Byrn.十九世纪发明进展.