其主要任务是监测该区域的无脊髓灰质炎状况。

Its main task is to monitor the polio-free status of the region.

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区域越小，任务越简单

The smaller the area, the easier the task.

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西部开发是一项规模宏大、任务极为艰巨的区域开发工程。

Development is a dimensions western the area with baronial, very formidable task develops a project.

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接到工作任务和钥匙后，立即开始到工作区域。

Receive work assignment and keys then proceed to assigned area.

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接到工作任务和钥匙后，立即开始到工作区域。

Receive work assignment and keys then proceed to assigned area.

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