漢：形容詞以及名詞后綴id意為"like,relating to that which"。 英：word-forming element meaning "belonging to, connected with, member of a group or class" (plural -idae), from French -ide and directly from Latin -ides, masculine patronymic, from Greek -ides. In astronomy, of meteor showers, it represents Latin -idis, Greek -idos, the genitive of the feminine patronymic suffix. -id1 a suffix of nouns that have the general sense “offspring of, descendant of,” occurring originally in loanwords from Greek ( Atreid; Nereid ), and productive in English on the Greek model, especially in names of dynasties, with the dynasty's founder as the base noun ( Abbasid; Attalid ), and in names of periodic meteor showers, with the base noun usually denoting the constellation or other celestial object in which the shower appears ( Perseid ). Origin: < Latin -id-, stem of -is < Greek: feminine patronymic suffix; or < Latin -idēs < Greek: masculine patronymic suffix -id2 a suffix occurring in English derivatives of modern Latin taxonomic names, especially zoological families and classes; such derivatives are usually nouns denoting a single member of the taxon or adjectives with the sense “pertaining to” the taxon: arachnid; canid . Origin: < Greek -idēs -id1 , as singular of Neo-Latin -ida -ida or -idae -idae -id3 variant of -ide: lipid . -id4 a suffix occurring in descriptive adjectives borrowed from Latin, often corresponding to nouns ending in -or 1 , : fetid; humid; pallid . Origin: < Latin -idus Based on the Random House Dictionary, © Random House, Inc. 2013. World English Dictionary -id1 — suffix forming nouns 1. indicating the names of meteor showers that appear to radiate from a specified constellation: Orionids (from Orion) 2. indicating a particle, body, or structure of a specified kind: energid [from Latin -id-, -is, from Greek, feminine suffix of origin] -id2 — suffix forming adjectives , — suffix forming nouns 1. indicating members of a zoological family: cyprinid 2. indicating members of a dynasty: Seleucid ; Fatimid [from New Latin -idae or -ida, from Greek -idēs suffix indicating offspring] -id3 — suffix forming nouns a variant of -ide -ide or -id — suffix forming nouns 1. ( added to the combining form of the nonmetallic or electronegative elements ) indicating a binary compound: sodium chloride 2. indicating an organic compound derived from another: acetanilide 3. indicating one of a class of compounds or elements: peptide ; lanthanide [from German -id, from French oxide oxide , based on the suffix of acide acid ] -id or -id — suffix forming nouns [from German -id, from French oxide oxide , based on the suffix of acide acid ] Collins English Dictionary - Complete & Unabridged 10th Edition 2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009 1.fluid adj.able to flow as gases and liquids do 流動(dòng)性的；易變的 n.substance that flows 流體 *flu (=flow) 例句：These regulations are hoped to bring some order to the fluid currency exchange markets.人們希望這些規(guī)定能夠?yàn)槟壳安环€(wěn)定的外匯市場(chǎng)帶來(lái)秩序。 2.lucid adj.clear,lucent 明晰的；明亮的；透明的 *luc (=light) 例句：His explanation was surprisingly lucid given the clifficult nature of the experiment.考慮到實(shí)驗(yàn)本身的難度，他的解說(shuō)可謂是驚人地明晰。 3.vivid adj.lively,active;intense,bright生動(dòng)的，活潑的；強(qiáng)烈的；鮮明的 *viv (live) 例句：I have a vivid memory of exactly where i was and what i was doing when i first heard that the president had been assassinated.我清楚地記得最初聽說(shuō)總統(tǒng)被暗殺時(shí)我在何處，在做什么。