Also, many researchers believe that those who are willing to participate in a study about penis size may have larger than average penises, which would also skew the results.

还有，许多研究者认为那些愿意参与研究小弟弟尺寸的人也许拥有比一般要大的小弟弟，这同样也会影响结果。

youdao

Today, I discovered that my mom and her disgusting mess of a boyfriend refer to his penis as "the monkey. " And she says that I hate him because I'M immature.

今天，我发现我的妈妈和他令人厌恶的、脏乱的男友说话，男友指着他的弟弟说“猴子”，妈妈说“我讨厌猴子，因为‘我还未成年'”。

youdao

Male circumcision is the cutting off of a small amount of skin from the tip of the penis.

VOA: special.2009.04.01

And the idea is that you discovered at some point in your development that you lacked a penis.

这个观点认为,女性会在发育的某个时期,发现自身缺少阴茎。

耶鲁公开课 - 心理学导论课程节选

He opens the door to the room, and there is a picture that Camille has drawn of Dean: a portrait of him completely naked, and it notes his penis in that picture.

他打开房间门，看到有一张画,是卡米尔画迪恩的一张裸体肖像，画上还画了他的阴茎。

耶鲁公开课 - 1945年后的美国小说课程节选

Closer examination of the animals' anatomy revealed that the sea slugs had a large part of their penis coiled up in a spiral inside their bodies, which they would then use to replenish their missing part.

BBC: Sea slug's 'disposable penis' surprises

You can find strong statistics, and useless investment signals from butter production in Bangladesh, the US population of 9 year old kids, and now, in a dramatic breakthrough, relating average penis size to GDP growth, a key measure of stock market returns around the world.

FORBES: Move up http://i.forbesimg.com t Move down

With inflatable implants, doctors put cylinders inside the penis, a pump in the scrotum, and a fluid reserve inside either the scrotum or the abdominal wall.

CNN: 5 questions to ask before having penis surgery