对直升机防御defense: n. 〔美国〕 ＝ defence. in defense: 保卫；保护in defense of: 为...辩护, 为保证..the defense: 被告matters pertaining to defense; defense: 防务下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:antihilicopter defense，即可在微信中查询翻译
