sizerWiktionary 原文英美构词拆解sizsize词干er-er后缀-er(added to verbs) A person or thing that does an action indicated by the root verb; used to form an agent noun. · (added to verbs, informal) A person or thing to which the root verb is done or can be done satisfactorily.词源说明From size + -er.释义名词noun1An instrument or contrivance to size articles, or to determine their size by a standard, or to separate and distribute them according to size.2An instrument or tool for bringing anything to an exact size.3An object used at the airport to test to see if a carry on or personal item is the correct size allowed by the airline.4Alternative form of sizar (“undergraduate who received an allowance”).同族词派生词 2