lower safety zone limit安全: safe; secure; safety; securi ...区: H region; H下限: lower limit; prescribed mini ...安全区: area of safety; haven; nonhazardous area; place of safety; protective zone; safe area; safe zone; safety zone; security zone安全区, 有效区: safe area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:安全区下限，即可在微信中查询翻译
