We have major challenges, you can imagine, to finish this job, but as you've also seen, it's doable, it has great secondary benefits, and polio eradication is a great buy.
我们面临巨大的挑战，如你所知 来完成这项事业 但你也看到了 它可能的 它能带来巨大的衍生利益 而根除脊髓灰质炎是一笔很棒的交易