They lay on all essential services.
他们提供一切必要的服务。
Essential services. For instance, air traffic control, we can't shut that down.
例如，空中交通管制，我们无法关闭。
It is an essential tool for the planning of services and monitoring of disease patterns.
实际上它是制定服务计划和检测疾病征兆的必不可少的工具。
Much more attention must be paid to essential medical services and lacking health resources.
西部基本医疗保健服务、卫生资源贫乏尚未引起足够重视。
High quality of product and services are essential for us to compete and grow.
产品和服务的质量是我们竞争与成长的关键。
Marketing is not essential to human survival; hence your services may not be either.
营销不是人类生存的关键，因此你的服务也不是人类生存的关键。
An effective fault-management process is essential to quickly detect problems and maintain network services.
有效的故障管理流程对快速检测故障、维护网络服务具有重要意义。
At least 400 million people globally lack access to one or more essential health services.
全球至少有4亿人无法获得一种或多种基本卫生服务。
At least 400 million people globally lack access to one or more essential health services.
全球至少有4亿人无法获得一种或多种基本卫生服务。
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