| 单词 | 极微小 |
| 释义 | 〔infinitesimal〕Immeasurably or incalculably minute.极微小的，微不足道的〔myofilament〕Any of the ultramicroscopic filaments, made up of actin and myosin, that are the structural units of a myofibril.肌丝：一种极微小的细丝，由肌动朊和肌球蛋白组成，是肌原纤维的结构单位〔meticulous〕 Punctilious specifically applies to strict, exact attention to minute details of conduct: Punctilious 专指对极微小行为细节的严格的、精细的注意： 〔prion〕A microscopic protein particle similar to a virus but lacking nucleic acid, thought to be the infectious agent responsible for scrapie and certain other degenerative diseases of the nervous system.朊病毒（感染性蛋白质）：极微小的蛋白质微粒，类似于病毒，但不含核酸，被认为是绵羊痒病和其他的一些神经系统变性疾病的传染介质 |
| 随便看 |
学习网英语词汇栏目收词371507余条，连同派生词、复合词、词组和习语等。每个词条提供了音标、词性、释义、用法、搭配和同（近）义词等多项功能，对所收词汇进行全方位的解释和说明，内容丰富，功能全面。