形容词
中文翻译：无接触的
同义词：
['contact-free', 'contact-less', 'contact-free', 'contact-less']
例句：
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1. The new phone is designed to be contactless for added security.
这款新手机设计为免接触，以增加安全性。
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2. The contactless payment system has become increasingly popular.
无接触支付系统越来越受欢迎。
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3. The researchers found that the contactless technology could significantly reduce the risk of transmission.
研究人员发现，这种无接触技术可以大大降低传播风险。