pulselessWiktionary 原文构词拆分pulse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 pulse + -less.释义（英文）形容词 AdjectiveHaving no pulse.词族派生词（4）pulselesslypulselessnesspulseless diseasepulseless electrical activity