stainlessadj.
英 'steɪnlɪs | 美 'stenlɪs
中文adj. 不锈的；纯洁的，未被玷污的；无瑕疵的
词根词源
stainless (adj.)1580s, from stain (n.) + -less. Related: Stainlessly. Stainless steel is from 1917, a chromium-steel alloy (usually 14% chromium) used for cutlery, etc., so called because it is highly resistant to rust or tarnish.
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