painless
/ˈpeɪnləs/📚 14426 30 1If something such as a treatment is painless it causes no physical pain. 无痛的
adjective [原级]无痛的；不痛的
Acupuncture treatment is gentle, painless, and relaxing. 针灸治疗很温和，无痛，也很放松。
单词造句:
Acupuncture treatment is gentle, painless, and relaxing. 针灸治疗很温和，无痛，也很放松。