endoplasmic reticulum

例句：

1. 1. The endoplasmic reticulum is responsible for the transportation of nutrients and waste products within the cell.
   内质网负责细胞内部营养物质和废物的运输。
2. 2. In the endoplasmic reticulum, proteins are sorted into different compartments based on their sizeand charge.
   在内质网中，蛋白质根据大小和电荷被分到不同的区域。
3. 3. The endoplasmic reticulum plays a crucial role in protein synthesis and folding, which is essential for cellular function.
   内质网在蛋白质合成和折叠过程中起着至关重要的作用，这对于细胞功能至关重要。