In general, men produce upward of 60 million sperm per milliliter of semen.

Now that the number of sperm per milliliter less than 20 million sperm.

现在认为精子数目每毫升少于2000万为少精子症。

Research and Analysis on the Mental Health of College Students in Hunan

湖南省大学生心理健康问题的调查分析与对策研究

They've reported that, when it comes to mental health, it's not just about having a generally "healthy" or "unhealthy" diet.

他们报告说，当涉及到心理健康，不再只是普遍性“健康”或“不健康”饮食的问题。

More than half of global emoji users ( 55%) said using emojis in communications has positively impacted their mental health.

全球超过一半的表情符号用户（55%）表示，在交流中使用表情符号对他们的心理健康产生了积极影响。

The Royal College of Psychiatrists6 said the study showed the importance of ensuring women had access to mental health services during and after pregnancy.

英国皇家精神科医学院表示，这项研究证明了确保女性在怀孕期间和怀孕后获得心理健康服务的重要性。

Mental health is way more complicated than that, and everything from your genetics to your environment can affect it.

心理健康比这复杂得多，从你的基因到环境都会影响它。

Well, there's a lot of evidence for a link between certain mental health symptoms and inflammation.

有很多证据表明某些精神健康症状和炎症之间有联系。

But a growing body of research is showing that diet is important for mental health, too.

但越来越多的研究表明，饮食对心理健康也很重要。

It's also been connected to mental health disorders5, such as depression and anxiety.

它还与精神健康障碍有关，比如抑郁和焦虑。

Psychologists say that worries about the environment are affecting young people's mental health.

心理学家表示，对环境的担忧影响年轻人的心理健康。

What does that have to do with mental health?

这和心理健康有什么关系？

But both studies show that long life isn't just a matter of your physical health but of your mental health.

但是两项研究都表明，长寿并不只是身体健康的问题，还涉及你的心理健康。

Their aim was to determine the relationship between these risk behaviors and mental health issues in teenagers.

其目的在于确定青少年中存在的这些高危行为和精神健康问题之间的相互关系。

Also through the case of the enterprise in the successful practice, it proves the feasibility and validity of the enterprise production process improvement design based on Management by Objective.

也通过案例企业在实践中的成功，证明基于目标管理的企业生产工艺改进设计的可行性与有效性。

Chapter Three explores the principles to guide the design of index system, namely, the conception of systematic design, sustainable development and dynamic management by objective.

第三章探讨了指标体系设计应遵循的基本思想，即：系统设计、可持续发展及动态目标管理思想。

Basis on the construction of Putian Walking Street engineering, the author introduces the application of MBO ( Management By Objective) in construction.

文章通过莆田市步行街工程建设，阐述目标管理技术在工程建设中的作用。

Finally, taking Xi' an west passenger transport station as example, it empirically analyzes the construction of management by objective.

最后，以西安市城西客运站为例，对构建目标管理体系进行实证分析。

V.Realize MBO ( management by objective) motivation mechanism and encourage the employees to pursue higher goals.

实现目标管理激励机制，鼓励员工追求更高的目标。

With the implement goal as orientation, management by objective is one of the lowest cost, most easy to operate management mode.

目标管理以实施目标为导向，是成本最低、最易操作的经营管理方式之一因此，对汽车客运站而言具有很大的实用价值。

Hospitals should be implemented management by objective, undergone constant changes and improved their efficiency by facilitating" specialization";

医院要实施目标管理并不断致力于变革，通过专业化提高效率和效益；