词典论坛联络

   英语 +
Google | Forvo | +
短语

protection system

核物理 systém ochrany
protection system A series of procedures and devices designed to preserve people, property or the environment from injury or harm
环境 ochranný systém
Protection System
: 4 短语, 4 学科
人权活动1
微软1
环境1
社会科学1