Specimen可与sample换用，但常指人或物中选出的有代表性部分，或指供科研、化验或检验用的标本。 good quality： 最普通用词，既可指有形或无形的特性，又可指个性或共性的特征。 The newest congressional report acknowledges the vital significance of technological education, but also asserts that the research of your humanities (人文学科)and social sciences have to continue being central component... https://houseingurgaon.blogspot.com/