如何使用 "folly" 造句

1. So when depression economics prevails , prudence is folly .
所以当萧条经济蔓延的时候,精打细算的愚蠢的。
2. Is this just a moment of collective folly , a wilful blindness to the lessons of the past ?
这难道仅仅是一次集体愚行,仅仅是一时对过去经验教训的故意视而不见?
3. Would the american president still feel obliged to defend israel from the consequences of its own folly ?
美国总统还会认为他有义务保护以色列不为其所做的蠢事承担后果?
4. But that would be utter folly .
但是这是彻头彻尾的愚蠢想法。
5. Folly and ignorance play a part .
愚蠢和无知也起到了一定作用。