您要查找的是不是：
- Mission Essential Backup 任务必需后援
- Mission Essential Backup Unit 完成任务所需备用装置
- Joint Mission Essential Task List 联合任务基本项目表
- Mission Essential Communications Network 任务专用通讯网
- Mission Essential Contingency Item 完成任务所需基本应急物品
- Mission Essential Data Processing 任务必需数据处理
- Mission Essential Equipment List 任务所需基本装备表
- Mission Essential Subsystem Matrix 完成任务所需子系统矩阵
- It seemed to be her mission to care for her brother's children. 照顾她兄弟的孩子似乎成了她一生的使命。
- Do you have any backup if this machine fails? 如果这台机器坏了你有备用的吗?
- We should always have a backup plan. 我们应该总是有备用的计划。
- Her most essential quality is kindness. 她最主要的品质是善良。
- Her mission was to reclaim former criminals. 她的任务是感化过去的罪犯。
- An official mission was sent to settle the dispute. 一个官方使团被派去解决争端。
- Of course, it was an unprecedented mission. 当然有，这可是一项空前的任务呢。
- Surprise is an essential component of my plan. 我这项计划主要就是想使大家惊喜一下。
- The doctor works at the mission. 那医生在贫民教区工作。
- Rice is our essential foodstuff in life. 大米是我们生活的基本食物。
- National unity is essential in time of war. 举国团结在战时是非常重要的。
- What is the essential theme of the play? 这剧本的主题是什麽?
