p185 右起第二段倒数第4行：
因为在不同天线架设环境中优化后的调谐又会发生改变，所以问题比较复杂，在一个火腿可以良好工作，在另外一个火腿就不行了。
so what works在这个语言环境中应翻译成：在一个火腿那里可以正常工作，在另外一个火腿那里就不行了。
the problem is compounded because the optimum tuning changes in a different antenna environment, so what works for one amateur may not work for another. even so, many amateurs with limited antenna space are willing to accept the mismatch on some bands just so they can operate on those frequencies using a single coax feed line.
