Phormidium tenue

例句：

1. 1. The ciliate protozoa are found in the oceans and rivers.
   纤毛虫存在于海洋和河流中。
2. 2. Ciliates play a crucial role in maintaining the balance of marine ecosystems.
   纤毛虫在维护海洋生态系统平衡中起着至关重要的作用。
3. 3. In recent years, scientists have discovered new species of ciliates that can be used as biosensors for detecting pollutants.
   近年来，科学家们发现了新的纤毛虫物种，可以用作生物传感器来检测污染物。