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

• The sporting world
  體育界,運(yùn)動(dòng)界
• Ireland borders the Atlantic Ocean
  愛爾蘭以大西洋為界。
• Li shizhen was the originator of the Chinese pharmacology.
  李時(shí)珍是我國(guó)醫(yī)藥界的鼻祖。
• The playing area is demarcated by a white line.
  運(yùn)動(dòng)場(chǎng)地以白線為界.
• He has come rather to the front lately in the French detective service.
  他最近在法國(guó)偵探界里嶄露頭角。
• Religious cults and priesthoods are sectarian by nature
  宗教崇拜和僧侶界天然就有派性。
• The posterior borders of the left ventricle and inferior vena cava are well seen
  左心室和下腔靜脈的后界看得很清楚。
• Mrecator might be used by a geologist mapping current directions in palaeozoic sediments
  地質(zhì)學(xué)家可用麥卡托投影來繪制古生界沉積的水流方向。
• officialdom.
  官場(chǎng)，公務(wù)員界
• fields bordered by woods
  以樹林為界的田野

• Boundary is used with administrative areas smaller than a state or country boundary
  用于指行政區(qū)域,范圍比國(guó)家小
• An exact artificial boundary condition is obtained on a spherical boundary by a constructive method.
  同樣，采用構(gòu)造法在球面上獲得了精確的無反射人工邊界條件。
• There are no indecisive boundaries between the two opinions.
  這兩種意見界線分明。

• Beyond the scope
  越出范圍
• But there is plenty of scope at that level.
  然而在此水平上還是有足夠的余地。
• He is a man of limited scope.
  他是一個(gè)見地狹窄的人。

• Determination of the Extent of Branching in Amylopectin
  支鏈淀粉分支程度的測(cè)定
• He loves you to a great extent.
  他很愛你。
• To that extent, Mr Sharon was no“ aberration”.
  由此看來，沙龍先生所作所為并非不循常理。