1·The researchers acknowledged this may pose a dilemma to new mothers, given that infants sleep so fitfully.
研究人员承认这可能会让新妈妈们为难，因为婴儿的睡眠是断断续续的。
2·This can pose a dilemma.
这样造成了两难的境地。
3·Uncomfortably strong currencies and overheating economies pose an excruciating dilemma for policymakers.
不幸地是，强货币和过热的经济为政策制定者提出了一个让他们极严峻的课题。
4·Even the simplest and most obvious prescriptions, to do with improving security at domestic airports, pose a dilemma.
改善国内机场的安保是最简单也是最显而易见的解决方案，但即使想做到这一点也让人进退两难。