He had been engaging in some kind of kinky sexual activity.

他一直在进行一些反常的性活动。

《柯林斯英汉双解大词典》

These range from the number of calories burned in sexual activity to the value of physical education classes to the notion that burning 3, 500 extra calories leads mathematically to a one-pound weight loss.

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Vivus, aiming at surgically menopausal women, found a 64% increase in "satisfying" sexual activity in a small trial of premenopausal women (placebo was 42%) and is now launching a larger late-stage test in postmenopausal women.

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These trained police and prosecutors do understand why it is so hard to report, why the testimony sometimes changes and how the fact of participating in the sexual activity doesn't signify enjoyment or lack of harm.

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