1.在实验观察时,常常难以从培养液中吸到大量的草履虫。以往的书籍介绍用离心的方法或自培养液上层表面吸取,但效果总是不佳,学生更难做到适度。若在无底试管或玻璃管的一端,包上一小块细密的丝绢或的确良布,用以过滤培养液,使草履虫滤集在管底的绢或布上,然后小心地取下翻转之,使 1. In experimental observations, it is often difficult to draw large amounts of Paramecium from the culture broth. Previous books introduced by centrifugal method or from the upper surface of the culture medium, but the effect is always poor, more difficult for students to be moderate. If one end of the tube or glass tube is not covered with a small piece of fine silk or a good cloth, to filter the culture fluid, the paramecium to filter the tube bottom of the silk or cloth, and then carefully remove the flip Make