任务重，时间紧。
面对时间紧、任务重的课堂教学，通过集体备课提高教学效益显得尤为重要。
To face the heavy task of teaching in the very short period of time, it is important to improve efficiency by using collective lesson preparing.
在时间紧、任务重、要求高、成本低的情况下，进行了一次以石料开采为目的的硐室爆破。
The demolition described here is a chamber blasting which conducted for exploitation of stones within a limited time, under a strict requirement of high quality and low cost.
贵州的农村沼气工程研究及建设，时间紧任务重，专业设计研究机构缺乏。
For the rural biogas engineering research and building in Guizhou province, the time is urgent and the duties is layers and the special design & research setup is lack.
贵州的农村沼气工程研究及建设，时间紧任务重，专业设计研究机构缺乏。
For the rural biogas engineering research and building in Guizhou province, the time is urgent and the duties is layers and the special design & research setup is lack.
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