1. 加裝了防護過濾器以后，這煙囟已不再散發(fā)成股的廢氣到大氣中去了。
   The chimney is no longer giving off volumes of waste gas into the atmosphere, as protective filters are being used.
2. 代理防火墻比包過濾器防火墻易于保持更多的上下文
   The proxy firewall maintain context more easily than the packet filter firewall.
3. 內(nèi)部和外部包過濾器和一臺單向定位的bastion主機的配置提供很好的安全性。
   The configuration of internal and external packet filter and a single home bastion host provide very good security.
4. 在燃料進入發(fā)動機之前，過濾器先把它過濾。
   The filter cleans the fuel before it enters the engine.

過的英語翻譯：

濾器的英語翻譯：