VOA慢速英语:Bill Gates Said Philanthropy Needs Research and Innovation

1.because of the way the job incentives work。

because of 因为，由于; 基于;
例句：Was it because of dylan thomas?
这是因为迪伦托马斯的缘故吗？

2. The foundation he said, has paid for the development of two polio vaccines.

pay for 赔偿; 为…付钱; 因…受罚[痛苦]; 替某人付款;
例句：Christmas defuses the situation by telling the growing crowd that he will pay for the damage.
克里斯莫斯告诉渐渐围拢过来的人群他会负责赔偿，平息了事态。

3. that's got to be [done by] government because philanthropy isn't there day in and day out serving the entire population.

day in and day out 天天地，每天地; 日复一日; 日以继夜;
例句：If you're writing day in and day out without a plan, you need to keep reading this article. Why your writing keeps you poor
如果你日复一日没个计划的码字，你需要好好读一读本文：为什么你写了那么多还是这么穷。