基本解释adj.无痛的;不痛的同根派生 painlessness相关词英汉例句用作形容词 (adj.)The scan is safe, quick and painless.扫描过程是安全、快速和无痛的。The most common presenting symptom is a painless mass.主要的临床症状为无痛性肿瘤。Walking is an easy, painless and powerful form of exercise.走路是一种简单、不痛苦又有效的运动。painlessness更多例句