In the first part of this review, the age, race, sex, and smoking aspects of lung cancer in the u.s. are briefly characterized . 本文的第一节，简要地描述美国肺癌患者的年龄、性别、种族以及吸烟情况。
One of the purposes of united nations is to achieve international co-operation without distinction as to race, sex, language or religion . 联合国的宗旨之一是实现国际合作，不分种族、性别、语言或宗教。
Under these conditions, ethnic family patterns were slowly broken down by an increasingly urbanized, industrialized environment . 在这种情况下，由于都市化、工业化的日益发展，种族家庭的模式缓慢地解体。
It is small wonder, then that the progressive era was a drear period for negroes ambitious for the advancement of their race . 因此，毫不奇怪，进步时代对于热望争取其种族进步的黑人来说，是一个抑郁的时期。
Because there are so many different nationalities in america, visitors can find almost any kind of restaurant in the larger cities . 因为美国有许许多多不同的种族，游客在多数大城市几乎可以找到各种各样的餐馆。
The negro, on the other hand, is just emerging, and is still a little afraid of the consequences of his newly acquired raceconsciousness . 而黑人刚刚崭露头角，对他们刚刚获得的种族觉悟所产生的后果仍然怀着胆怯的心理。
The indian family of america, unlike any other existing family, exemplified the condition of mankind in three successive ethnical periods . 美洲的印第安种族不象其它任何现存的种族，他们为人类文化顺序相承的三个阶段的社会状态都提供了例证。
