nest egg困难

Because of longer life spans, Americans are also boosting their savings to preserve their nest eggs, the TD Ameritrade study showed, which surveyed 2,000 adults between 40 to 79.

德美利证券的这项研究调查了2,000名40至79岁的成年人，结果显示，由于寿命延长，美国人也在增加储蓄以保住他们的养老金。