endocytosis

例句：

1. 1.The cell's internal machinery is essential for its survival.
   细胞的内部机械是其生存所必需的。
2. 2. During the infection process, the virus enters cells through endocytosis.
   在感染过程中，病毒通过内吞作用进入细胞。
3. 3. The researchers found that the enzyme could enhance endocytosis efficiency.
   研究人员发现该酶能提高内吞作用的效率。