【英语时差8,16】除臭味的袜子2

（单词翻译）

 How come socks don’t lose their power like insoles do? There are several kinds of odor preventing and odor destroying treatments for textiles. For the most part, they work by killing¹ or inhibiting² the bacteria and fungi³ that cause odors. For example, these socks contain Quaternary Ammonium Compounds, or QACs. QACs are complex molecules⁵ with one end that binds⁶ tightly to the surface of the treated fibers⁷. The rest of the molecule⁴ is made up of a positively⁸ charged nitrogen atom and a long chain of carbons. Think of the QAC molecule as an electrically charged sword. The long chain of carbons punctures⁹ the cell membrane¹⁰ of a microbe, allowing the charged nitrogen to electrically disrupt the cell’s contents. Since nothing is bound permanently¹¹ to the now dead cell, the QAC doesn’t lose strength and is ready to destroy the next offending microbe that crosses its path.