1·How come my toy car doesn't work?
我的玩具车为什么发动不了了？
2·How come humans speak so many languages?
为什么人类会说这么多种语言？
3·How come the UK has been slow in imposing the tourist tax?
为什么英国在征收旅游税方面行动迟缓？
4·How come some people's smiles are better than other people's smiles?
为什么有些人微笑比另一些人更好？
5·But nowadays in spite of all that, and expensive membership fees, health clubs are hugely popular, so how come?
但如今，尽管如此，尽管还有昂贵的会员费，健身俱乐部还是非常受欢迎，那为什么呢？
6·How come people have to turn off their cell phones and all our electronic devices when an airplane is about to take off?
当飞机要起飞时，人们为什么要关掉他们的手机和所有的电子设备呢？
7·This accounts for our reaction to seemingly simple innovations like plastic garbage bags and suitcases on wheels that make life more convenient:"How come nobody thought of that before?"
这就解释了我们对塑料垃圾袋和带轮行李箱等看似简单的发明的反应：“为什么以前没有人想到这一点？”
8·This accounts for our reaction to seemingly simple innovations like plastic garbage bags and suitcases on wheels that make life more convenient: "How come nobody thought of that before?"
这就解释了为什么当我们看到像塑料垃圾袋和带轮行李箱这些让生活更方便且看似简单的发明时，我们的反应是：“为什么以前没有人想到这个？”
9·This accounts for our reaction to seemingly simple innovations like plastic gargabe bags and suitcases on wheels that make life more convenient: "How come nobody thought of that before?"
这就解释了为什么当我们看到像塑料垃圾袋和带轮行李箱这些让生活更方便且看似简单的发明时，我们的反应是：“为什么以前没有人想到这个?”
10·"How come we never know what's going on?" he groused.
“我们怎么会不知道发生了什么事？”他抱怨道。
—— 《柯林斯英汉双解大词典》