吃透英语课本，提升在校竞争力
n. 分界线；边界
复数：boundaries
Anything that crosses the boundary of a black hole cannot get back.
任何物质只要跨越黑洞的界线就再也无法出来。
We would need their agreement to build outside the city boundary .
我们在市界以外的地方建房需要他们批准。
National boundaries are becoming increasingly meaningless in the global economy.
在全球经济中，国界已经变得越来越没有意义。
We walked through the churchyard towards the boundary wall .
我们穿过教堂墓地，向院墙走去。
The stream curves round to mark the boundary of his property.
小河打了个弯，为他这块地划出了边界。
The property’s boundary line is 25 feet from the back of the house.
这块地产的边界线在屋后25英尺的地方。
boundary disputes between neighbouring countries
邻国之间的边界争端
the boundaries of human knowledge
人类知识的极限
boundary condition
边界条件，界面条件
boundary element method
边界元法；边界要素法
boundary layer
边界层
boundary point
边界点
plate boundary
板块边缘，板块边界
natural boundary
自然边界
boundary layer flow
边界层怜；边界层流动
boundary line
边界线；疆界线
phase boundary
相界面；相界线
boundary layer separation
边界层分离（现象）
boundary value
边值；边界值
lower boundary
下边界
grain boundary
[冶]晶界
upper boundary
上边界
turbulent boundary layer
湍流边界层；紊两面层
boundary surface
界面；边界面
outer boundary
外边界
crystal boundary
晶界；晶体间界
moving boundary
移动边界；移动界面
boundary lubrication
边界润滑
n.[地质]边界；范围；分界线
region
extent
spectrum
territory
area
考纲分布
n. 边界; 分界线
考纲释义
真题例句
Set boundaries for yourself your time goes
给自己设定时间界限
[2017 全国卷2 阅读理解]
备考派生词
boundary
n. 分界线；边界；界限；击球超过边界线得分
bounce
v. 弹起；反弹；碰撞；跳跃着前进；反射；被退回；迅速恢复；弹跳；不断地跳动
