Or speak to yourself and make a point of using all the words that you practice. Okay?

再或者就与你自己对话，把你练习的所有单词都用上，好吗？

The Pfizer-Biontech vaccine candidate needs to be kept at an ultra-cold minus 80 degrees from the point of manufacture up to the point of use.

而辉瑞和生物新技术公司的候选疫苗从生产到使用，都需要保持在零下80度的超低温环境中。

For many developing countries, they operate the out of pocket model, where health care is paid for at point of use with no centralized funding system.

对于许多发展中国家， 他们采用自付费用模式，即在没有集中供资系统的情况下在使用点支付医疗费用。

But what's your prognosis for it going forward, let's say over the next decade and in particular for its founding principle of providing care that's free at the point of use?

但您对它的未来（比如未来十年）有何预测，特别是其提供免费护理的基本原则？