您要查找的是不是：
- So why two shades of orange and purple? 那么，为什么两个色调的橙色和紫色的？
- Why two different ways to bind input control elements to instance data? 为什么用两种不同方式把输入控制元素绑定给实例数据?
- The reason why two numbers may have different digits, yet be very close, lies in the manner of constructing the digits. 为什么两个很接近的数可有不同的数字呢?其原因就在于构造这些数字的方式。
- It may not be clear why two electrons should be permitted in each quantum state rather than just one. 人们也许不明白，为什么在每一量子态中容许存在两个电子而不是一个。
- The need to evaluate the significance of stenotic lesions on heart function is why two exams are generally needed to perform a complete cardiac workup. 在心功能上需要评价狭窄性病变的显著性，为什么一般需要做心脏完整的两种检查。
- "We wanted to know why two viruses would behave differently than a single virus, given that the infecting viruses possess the same genetic decision circuit. 研究者想要知道为什么含有同样基因决定通路的两种病毒感染相对单个病毒感染会有截然不同的结果。
- Why two? 怎么是两个?
- You will also see why two basic accounting principles, the revenue recognition principle and the matching principle, assure that a company's income statement reports a company's profitability. 你将会理解为什么这两个会计准则，收入认定原则和收入对应原则，确保了一份企业的损益表报告了该企业的利益。
- Why Two Browsers are Better than One 为什么用两种浏览器比只用一种好
- She knows why the metal is the good conductor. 她知道金属为什么是好的导体。
- Must you dash off? Why not stay for a cup of tea? 你一定要急急忙忙走吗？为何不留下喝杯茶呢？
- Is that why you don't want to go home? 这就是你不想回家的原因吗？
- That explains why she is not here. 那就说明了她不在这里的原因。
- It seems uncertain why he lost the election. 他落选的原因似乎并不清楚。
- Do you know why Mr Brown has a heavy heart? 你知道为什么布朗先生心情不愉快吗？
- I do not know why acids eat in metals. 我不知道酸腐蚀金属的原因。
- I have no idea why he resigned his post. 我不知道他为何辞去他的职务。
- He expounded the reasons why he did it. 他阐述了他做这件事的理由。
- The reasons why he did it are obscure. 他做那事的理由还不清楚。
- I couldn't cipher out why she was there. 我搞不清她为什么会在那儿。
