firewall
n.
also fire-wall, 1851 as a physical wall meant to prevent the spread of fire in a structure, from fire, n. + wall, n.. Computer sense (originally figurative) is by 1990.
| 词汇 | firewall |
| 词根词缀 | Online Etymology Dictionary firewall n. also fire-wall, 1851 as a physical wall meant to prevent the spread of fire in a structure, from fire, n. + wall, n.. Computer sense (originally figurative) is by 1990. |
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