Sand production is an important factor, which affects oil well productivity.

出砂是影响油井生产能力的一个重要因素。

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If no penalty is imposed on an employee for poor performance, other employees may react by reducing their productivity as well.

如果没有对表现不佳的员工进行处罚，其他员工可能也会降低他们的生产力。

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To me,that incremental loss of productivity may be well worth it for the team-building elements of the social connections.

VOA: standard.2009.03.25

The U.N.says they include loss of productivity and family income, as well as violence, security problems and traffic and workplace accidents.

VOA: standard.2010.06.23

But because of the numbers of employee deaths and the media attention they have attracted, critics say France Telecom's problems have emerged as a warning story about the downsides of valuing productivity and growth over employee well being.

VOA: standard.2010.04.11

Study author David Hughes estimates there is actually only a 12-year supply of easily accessible, domestic natural gas, in part because well productivity is declining.

FORBES: New EIA Report Says Shale Gas Boom Could Go Global

Mr. WESSEL: Well, productivity grew very slowly for about 25 years, until there was this remarkable surge about 1995.

NPR: U.S. Productivity and Economic Forecasts

Pirelli boasts improvements in quality as well as productivity.

ECONOMIST: Re-inventing the wheel