The key is what we are spending our time on, and how we are expending our energy.

问题的关键是我们将时间花费在什么上面，和我们怎样消耗我们的精力。

youdao

Because a digital signature is based on public key cryptography, it generally takes much more time to compute a digital signature than a MAC.

由于数字签名是建立在公用密钥密码术基础上的，因此计算一个数字签名所花的时间往往要比计算一个mac长得多。

youdao

TIP: To move an item one pixel at a time, select the item and press an arrow key on your keyboard.

提示：要使项目一次移动一个像素，则选择该项目并按下键盘上的箭头键。

youdao

Imagine I have a little lamp, a little goose- one of those little gooseneck lamps, I'd put it on the table here, I'd put the height about a f-- about a foot off the table. And if I was really good, - I could hit, or time it so that when I hurt- yeah, try again. When I turn this on switch on in the lamp, at exactly the same time, I'm going to hit a key on my computer and start it running.

想象下我有一个那种小雁颈台灯-,我把它放在桌子上，大概离桌子，有一英尺那么高吧,这样挺好的，我可以打开-,或者关闭这灯,并在这同时，我可以让我电脑,开始运行。

麻省理工公开课 - 计算机科学及编程导论课程节选

That is deadline time on two key trade issues: renewal of the semiconductor arrangement and completion of the investigation into unfair competition for consumer film and photographic paper.

CNN: SUMMITS

TriNet helps entrepreneurs grow their business by giving them time to focus on the key business priorities.

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If two people have agreed on a private key ahead of time, they can use the service from a Web-connected machine anywhere in the world and start communicating securely, Kobeissi says.

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