Something such as a treatment that is painless causes no physical pain.
例句
Acupuncture treatment is gentle, painless, and, invariably, most relaxing...针灸疗法柔和,无痛,而且总是令人非常放松。The operation itself is a brief, painless procedure.手术本身耗时短且没有痛苦。
ADJ-GRADED
不费劲的;容易的
If a process or activity is painless, there are no difficulties involved, and you do not have to make a great effort or suffer in any way.
例句
House-hunting is in fact relatively painless in this region...在这个地区找房子事实上相对比较容易。There are no easy or painless solutions to the nation's economic ills.这个国家的经济弊病没有轻松便捷的解决办法。
英英词典释义
Adverb
1. without pain;
"after the surgery, she could move her arms painlessly"