unleadedadj.
英 ʌn'ledɪd | 美 ,ʌn'lɛdɪd
中文adj. 无铅的；不包铅的；不插铅条的
词根词源
unleaded (adj.)1610s, "having no lead," from un- (1) "not" + leaded (see lead (v.2)). In reference to gasoline, from 1965. In reference to printing, from 1902.
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