Density is defined as mass divided by volume.

密度的定义是质量除以体积。

The concept of sustainable development has been defined as profitable.

可持续发展观已经被定义成了有利可图的发展。

We were defined as man, the toolmaker.

我们被定义为人，工具制造者。

Technically, a recession is defined as two-quarters of negative growth.

严格来讲，经济衰退的定义是两个季度的负增长。

Procrastination is defined as " the action of delaying or postponing something" .

拖延被定义为“延迟或推迟某事的行为”。

Today, " wife" is defined simply as " a female partner in a marriage."

如今，“妻子” 仅仅被简单定义为 “婚姻中的女性合伙人。”

Finally, history may be defined as that which historians write about the past.

最后，历史也可以被定义为历史学家们所撰写的有关过去的资料。

And sometimes, it's not even enough because the region is defined as a risk area.

有时，这还不够，因为这个区域被定义为风险区域。

A hate crime is defined as a criminal offense motivated by bias or prejudice.

仇恨犯罪被定义为一种因偏见或偏执而产生的犯罪行为。

And what the plus, plus, plus is could be defined as loss of face.

这个多得多得多可以被定义为丢脸。

First generation was defined as not having a parent with a four-year college degree.

“第一代大学生”被定义为他们的父母没有四年制大学学位。

Human-induced methane is defined as methane brought about by our human behaviors and activities.

人为导致的甲烷就是人类的行为与活动所产生的甲烷。

This problem has now been defined by the WHO as a medical problem.

世界卫生组织（WHO）将这个问题定义为一种医学问题。

This was defined as a human being exposed to extreme heat for one hour.

它被定义为一个人在高温下暴露一小时。

According to the world bank, poverty is defined as living under $1.25 per day.

根据世界银行的定义，贫困人口指的是每日生活费低于1.25美元的人群。

" Middle class" is defined as the ability to afford bottled water and a generator.

“中产阶级”被定义为有能力购买瓶装水和发电机。

And, although " people" is defined as many humans, it is not a collective noun.

而且，尽管people被定义为许多人，但它不是一个集合名词。

It is defined as the main solar time at Mars' prime meridian.

它被定义为火星本初子午线上的主太阳时。

Emotional maturity is defined as a high and appropriate level of emotional control and expression.

情感成熟的定义为高水平和适当的情绪控制与表达。

Premature deaths are defined as those that take place before the average age of death.

过早死亡是指那些发生在平均死亡年龄之前的死亡。