保險套包裝尺寸怎麼看?

保險套外盒所標示的闊度是指保險套圓周長的一半,例如闊度52mm±2mm,保險套圓周長就是52mm×2=104mm,即10.4cm±0.2cm,這是多數男人使用的保險套尺寸. 一般市售保險套長度落在17cm-19cm左右,因此在選購保險套尺寸時,闊度才是必須注意的.

What condoms are 100% effective?

The only 100% effective way to prevent sexual transmission of HIV and STIs is through abstinence - avoiding all vaginal, anal and oral sex. Using a latex male condom or a female condom can greatly reduce, but not entirely eliminate, the risk of HIV and STI transmission.

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Environmental problems also play an important position in the cryptocurrency debate. The energy-intensive nature of cryptocurrency mining, specially for proof-of-work blockchains like Bitcoin, has drawn criticism for the environmental impact. Mining needs huge amounts of computational energy to resolve complicated mathematical problems and validate transactions, leading to significant electricity consumption. It's raised considerations concerning the carbon impact of cryptocurrencies,… Continue