如何在不增加动物数量、不影响脆弱的土地和我们的资源基础的情况下确保食物供应，这是一项挑战。
The challenge is how to ensure food without increasing animal numbers and having an impact on fragile lands and our resource bases.
这低血糖能通过许多不同的方式影响人，特别是考虑到高数量的脆弱个体。
This low blood sugar can affect people in many different ways - especially considering the high numbers of vulnerable individuals.
面对食物贫困，数量惊人的纽约人非常脆弱：近20%的人如果失业将难以承受食物开销。
A surprising number of New Yorkers are vulnerable: almost 20% would not be able to afford food if they lost their jobs.
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