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。 主要内容如下:分 析介绍了几种常见抽油泵的工作原理、构造 、 适用范围及分类. After i came to get it back the next early morning, I could not advise them off my arrival this time while in the application. But I parked right in front on the big sidewalk yet again, went in & waited it's possible 2 min... https://gurugramluxuryproperty.blogspot.com/2025/06/sanctuary-105-elegant-urban-living.html