词汇精选：boundary的用法和辨析
一、详细释义：
n.
边界，分界线 [C]
例句：
The boundary between Shanxi and Shaanxi is the Huanghe River.
山西和陕西以黄河为界。
例句：
The river is the boundary between the two countries.
这条河是两国的分界线。
界限，范围 [C]
例句：
Minutes later, they scooted past the boundary their mother had set.
几分钟以后他们就冲过了妈妈划定的界限。
例句：
With the advance in science, the boundary of human knowledge is pushed further out.
随著科学的发展，人类知识的范围在不断扩大。
二、词义辨析：
border,bounds,boundary,frontier,limit
这些名词均含有“边界，边境”之意。border多指国与国之间或两地区的分界处，即分界线附近的边缘部分。bounds常与boundary换用，指土地边界，但意思不如boundary明确，主要用于抽象事物和文学作品中。boundary侧重地图上正式标定的、双方遵守的边界，也可指较小行政单位间的界线。frontier指两国接壤的前沿地区，属于各国的国境和边疆，多指设防的边界。limit含义广泛，常用作复数。指任何界限、范围、分界线外面的部分，可指有形或无形的东西。
三、相关短语：
boundary condition
边界条件，极限条件
boundary layer
边界层，界面层
boundary line
边界线，边线，境界线，境界线，分界限线
outer boundary
外边界
四、参考例句：
We crossed the state boundary at midnight.
我们在午夜穿过了州界。
The ball ran to the boundary.
球朝着边线滚去。
An exact artificial boundary condition is obtained on a spherical boundary by a constructive method.
同样，采用构造法在球面上获得了精确的无反射人工边界条件。
The river is the boundary between the two countries.
这条河是两国的分界线。
The fence marks the boundary between my land and hers.
这道栅栏是我的地和她的地的分界线。
A river forms the boundary between the two countries.
一条河流成了两国的分界线。
A river forms the boundary between the two countries.
一条河流成了两国的分界线。
The boundary between Shanxi and Shaanxi is the Huanghe River.
山西和陕西以黄河为界。
The lane is the boundary of our land from theirs.
那条小路就是我们这片地与他们那片地的分界线。
Blade and vein boundary show more Brown big ill spot.
叶片与叶脉交界处多现褐色大片病斑。
