establish
vt.建立，创办，设立;确定，确立，证实
The city of Boerne was established by German settlers in the 1840s.博恩市是德国移民于 19 世纪 40 年代时建立的。
establishment
n.建立，确立，确定;企业，机构;当权人物
a top-class training establishment一流的培训机构
estimate
n.估计，估量;评价，看法 vt.估计，估量
a rough estimate (=not an exact calculation) of how much time we’ll need对我们需要多少时间的粗略估算
ethnic
a.种族的
The school teaches pupils from different ethnic groups .该校教授不同种族的小学生。
