These cause excess production of mucus , which plugs up the lungs.
2
实践表明,新型充填堵漏技术充填速度快,适应了煤矿生产需要。
It proved that the new sealing and filling material can filling vacuum quickly and can meet the demand of coal mining.
3
事实上,在某些形势下,他们的反应还有点给你填堵,但是还不至于阻碍事情进展。
In some situations, in fact, their reaction is to challenge you, if not actually obstruct progress. Because certain objections have merit, try to approach each clinically as possible.