1.For people interested in cetacean evolution the most perplexing problem has always been: Why are there so many species of [beaked whale]?
对于那些对鲸豚类进化感兴趣的人来说，最困扰的问题总是：为什么突吻鲸会有那么多的种类？
2.Some fellow initiates suggested that the optimal solution to this perplexing problem was to keep cats.
于是有人建议养猫，才是解决鼠患的最好方法。
3.But it is a great perplexing problem to reduce and prevent the warping phenomenon during injection molding.
但如何减少、防止制品成形中时常发生的翘曲现象，是经常困扰工程师的一大难题。
4.On impact, many problems are perplexing problem is a think-tank, otherwise we will not think tank.
关于影响，很多问题是智库者困扰的问题，不然我们就不是智库了。
5.It is essential to examine every angle in order to fully understand the nature of a perplexing problem .
为了全面理解一个复杂问题的本质，必须从每个角度进行考查。
6.You will have a flash of insight regarding a perplexing problem.
对于一个令人感觉困惑的问题，你将会眼前蓦然一亮。
7.Recently in the Get Rich Slowly discussion forums, SouthernGent posted a perplexing problem. Here's his story
最近在“慢慢累积财富”论坛中，SounthernGent提出了一个很难办的问题.这里是他的故事