penultimate cell

例句：

1. 1.The researchers found that the penultimate cell in the human body plays a crucial role in metabolism.
   研究人员发现，人体中的倒数第二个细胞在代谢中起着至关重要的作用。
2. 2.In the study, the penultimate cell was found to be responsible for controlling the production of insulin.
   在该研究中，发现倒数第二个细胞负责控制胰岛素的产生。
3. 3.The penultimate cell is a critical component of the immune system, playing a vital role in defending against infections.
   倒数第二个细胞是免疫系统的关键组成部分，它在抵御感染方面发挥着至关重要的作用。