A homomeric substance is one which is made out of any number of identical products or molecules.

同质物质是由许多相同的产物或分子组成的物质。

youdao

A number of factors could be affecting the middle-aged, including taking care of aging baby-boomer parents, or coping with substance abuse or unemployment.

一系列的因素将会影响中年人群，比如说照顾衰老的父母，或者是面对失业或者药物滥用。

youdao

Significant substance use, age and educational level interaction effect were found regarding total mobile time(P<0.05) and number of migrated city(P<0.000).

在总体流动时间（P<0.05）和流动城市数量（P<0.000）上存在显著的烟酒使用行为、年龄和教育水平的交互作用；

youdao

If you have a large number of atoms in an aggregate, it is going to require that the substance turn solid and condense at room temperature.

如果有很多原子进行聚集，在室温下,会使的物质转变成固体状态。

麻省理工公开课 - 固态化学导论课程节选

So now, this equation here relates three state functions together: the pressure the volume, and the temperature. Now, if you remember, we said that if you had a substance, if you knew the number of moles and two properties, you knew everything about the gas.

压强，体积和温度,大家应该还记得,我们提过，只要知道气体的摩尔数,和任意两个状态函数,就可以推导出其他的状态函数，这样，我们可以把它改写成。

麻省理工公开课 - 热力学与动力学课程节选

Project Prevention's website states that its aim is to reduce the number of "substance-exposed" births to zero.

BBC: Woman offered '?200 to be sterilised'

But aside from the junior miners (what we tend to call those with a plan and a checkbook but not anything of any real substance) there are a number or larger players coming into production.

FORBES: The Coming Glut of Rare Earths

It said police had been informed and the 'small number of pupils' offered substance misuse support.

BBC: Pupils smoked drugs before school