Once absorbed, the chemical binds to sodium channel proteins, which help propagate nerve impulses.

一旦被吸收，这种化学品就会与有助于传播神经冲动的钠通道蛋白结合。

The CFTR protein is a channel protein that pumps chloride ions into various secretions, those chloride ions help draw water into the secretions, which ends up thinning them out.

CFTR蛋白是一种可以将氯离子泵入分泌物的通道蛋白，氯离子可以使水分渗入分泌物，对它们进行稀释。