随意的性行为；无承诺的性关系
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随意的性行为；无承诺的性关系；随意的性行为；无承诺的性关系
sexual activity between people who are not in a committed romantic relationship, typically without emotional attachment
They had casual sex while on holiday, but neither expected a relationship.
他们在度假时发生了随意的性关系,但双方都没有期待成为情侣。
随意的性行为；无承诺的性关系
sexual activity between people who are not in a committed romantic relationship, typically without emotional attachment
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