molecular channel

例句：

1. 1. The molecular channel is the path through which molecules move.
   分子通道是分子移动的路径。
2. 2. The molecular channel is a critical component in drug delivery systems.
   分子通道是药物输送系统中的关键组成部分。
3. 3. The molecular channel is responsible for the movement of water molecules in plants.
   分子通道负责植物中水分子的运动。