例:Microwave irradiations were considered unequivocally to produce “thermal effects”.
2.uneven a.不规则的(not uniform)；不平坦的(rough);不均匀的(unequal)
例：An ancient surface usually has uneven weathering.
3.unfavorable a．不宜的：令人不快的(not pleasing)；不顺利的(not propitious)
例：In only one of these last eleven years was the weather unfavorable for growing citrus crops.
4.unification n．统一；联合(the act, process, or result of unifying)
例：national unification民族统一 // economic unification经济联合
5.uniform n．制服(the dress of a distinctive design or fashion worn by members of a particular group and serving as a means of identification);a.统一的( consonant)；相同的(same)
例：Some schools require all of its students to wear uniforms while at school.// Do you think all unprocessed cacao beans contain a uniform amount of caffeine?
6.unilateral a．单侧的；单方面的(one sided; affecting only one side)
例：It becomes more difficult for Congress to exercise unilateral authority over Native American affairs.
例：the uninitiated reader缺乏相应知识的读者
8.unionist n．工会会员：联合主义者(an advocate or supporter of union or unionism)
例：It was not shared by most unionists until 1935.
9.unionization n．联合，组织工会(the action of organizing a labor union)
例：Politicians and administrators sometimes oppose unionization of clerical workers(行政人员)．