He became very weak from masturbating for a long time.

他长时间手淫导致身体变得很虚弱。

He recently masturbated at these photos every night.

他最近每晚都会对着这些照片自慰。

He offered to masturbate the little boy.

他主动提出要给这个小男孩进行手淫。

When I opened it, I saw a video of my parents telling me not to masturbate.

我打开了以后，看到里面是一个我父母的录像教育我说“SY是不对滴”。