Fires in enclosed Spaces like cockpits or ships are a key interest of DARPA, who funded the research as part of a search for new technologies to suppress or control fires.
像驾驶舱或船这样封闭空间的火焰是DARPA的主要兴趣，DARPA资助了此项研究以作为寻找抑制或控制火焰新技术的一个部分。
If any part of a shell command is enclosed by back quotes (a character also known as a grave accent), it is executed and the output placed on the command line.
如果shell脚本的某一部分用单引号(也称为重单符)括起来，那么将执行这个部分并将结果放在该命令行内。
CFG: text and CFG: part, which are enclosed in CFG: body, control how to create the various body parts.
body中还包括cfg： text和cfg： part，它们控制如何创建不同的消息主体部分。
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