rustlessWiktionary 原文构词拆分rust词根/词干+-less后缀Lacking (something); without (something). Added usually to a noun to form an adjective signifying a lack of that noun.词源说明From rust + -less.释义（英文）形容词 AdjectiveThat does not rust; stainless.Without rust; unrusted.词族派生词（1）rustlessness