If there was a secure way to distribute public keys to trusted parties, that would be enough.

如果有一种安全的方法可以将公钥分发给受信任的群体，这就足够了。

youdao

For humans to distribute their weight widely enough to not break the water's surface tension, each shoe would have to be several times larger than a football field, Lauga explained.

Lauga解释道，因为如果要让人类体重足够分散而不至于超过水的表面张力的话，每只鞋子的面积必须比足球场大数倍。

youdao

And it's even worse than that in one respect: your potential user (if you want to distribute your code) has to be comfortable enough with Perl to obtain your module and install it.

在另一个方面，情况更糟糕：您的潜在用户(如果您想分发您的代码)必须觉得，在Perl中取得您的模块并安装它不是件很麻烦的事。

youdao

Then, also emphasizing in the case of smallpox, how even after the scientific discovery was made, it took many, many decades for people to be able to produce the vaccine in large enough quantities and distribute it, so that you could think about making an impact on global prevalence of the disease.

同时重点就天花疫苗的发展展开了讨论,而即便当科学发现了天花病毒,仍然过了许多年,人类才能够,大规模生产并使用天花疫苗,由此你们可以了解到,在全球范围内,疫苗给天花以致命一击

耶鲁公开课 - 生物医学工程探索课程节选

"It had to be cheap enough to fit within the current provision and donation structures that already distribute wheelchairs, " he says.

CNN: Off-road wheelchair offers freedom for disabled poor