部分问题在于，在亚马逊申请一键式专利后近二十年，人们对在线零售购物和购买体验提出了不少问题。

Part of the problem is that almost two decades after Amazon filed the one-click patent, the online retail shopping and buying experience is filled with frictions.

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反应迅速、态度友好的零售商比那些不那么友好的零售商更有可能解决问题。

Retailers who're responsive and friendly are more likely to smooth over issues than those who aren't so friendly.

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如果出了什么问题——比如，一只饥饿的蜥蜴在四处寻找蚂蚁作为零食——那么一群没有食物的蚂蚁就会匆匆归来，给等待的蚂蚁发出“不要出去”的信号。

If something goes wrong—a hungry lizard prowling around for an ant snack, for instance—then a rush of ants returning without food sends waiting reserves a "Don't go out" signal.

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If you've turned in a program that's not syntactically correct, the TAs give you a zero.

不正确的,问题组，助教会给你们一个零分。

麻省理工公开课 - 计算机科学及编程导论课程节选

First problem set, problem set zero, has already been posted.

头一条问题的提出，提出问题为零。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, hopefully that kind of clears up that question. And, of course, when the velocity actually is zero, this equation that the de Broglie has put forth is valid for anything that has momentum, so if something does not have any velocity at all, it actually does not have momentum, so you can't apply that equation anyway.

能回答你的问题，当然，如果速度真的是零的话,德布罗意提出的这个方程,只对有动量的物体成立,所以如果一个东西没有速度，它没有动量，也就不能应用这个方程。

麻省理工公开课 - 化学原理课程节选