界的英文:
boundary
scope
extent
circles
group
kingdom (taxonomy)

参考例句:
  • The sporting world
    体育界,运动界
  • Ireland borders the Atlantic Ocean
    爱尔兰以大西洋为界。
  • Li shizhen was the originator of the Chinese pharmacology.
    李时珍是我国医药界的鼻祖。
  • The playing area is demarcated by a white line.
    运动场地以白线为界.
  • He has come rather to the front lately in the French detective service.
    他最近在法国侦探界里崭露头角。
  • Religious cults and priesthoods are sectarian by nature
    宗教崇拜和僧侣界天然就有派性。
  • The posterior borders of the left ventricle and inferior vena cava are well seen
    左心室和下腔静脉的后界看得很清楚。
  • Mrecator might be used by a geologist mapping current directions in palaeozoic sediments
    地质学家可用麦卡托投影来绘制古生界沉积的水流方向。
  • officialdom.
    官场,公务员界
  • fields bordered by woods
    以树林为界的田野

boundary是什么意思
n. 边界;范围;分界线

  • Boundary is used with administrative areas smaller than a state or country boundary
    用于指行政区域,范围比国家小
  • 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。
  • There are no indecisive boundaries between the two opinions.
    这两种意见界线分明。

scope是什么意思
n. 机会,余地;范围,领域;眼界,见识;望远镜

  • Beyond the scope
    越出范围
  • But there is plenty of scope at that level.
    然而在此水平上还是有足够的余地。
  • He is a man of limited scope.
    他是一个见地狭窄的人。

extent是什么意思
n. 广度,长度,宽度;范围,程度,限度

  • Determination of the Extent of Branching in Amylopectin
    支链淀粉分支程度的测定
  • He loves you to a great extent.
    他很爱你。
  • To that extent, Mr Sharon was no“ aberration”.
    由此看来,沙龙先生所作所为并非不循常理。

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