About 80% of the cyanide at that point is gone, so it does render the root much more safe.

这时大约百分之八十的氰化物都跑掉了，因此这确实可以使这些根更加安全。

麻省理工公开课 - 化学原理课程节选

Well, not everybody, but everybody can use to keep emails safe, just like sort of a really easy thing to do.

嗯，不一定是所有人，但是每个人都可以轻而易举地用这种密码来保证自己邮箱的安全，

积极参与俱乐部活动 - SpeakingMax英语口语达人

But we need to add in homeland security event so let's find the event for Friday of the following week.

但我们要加入国家安全的时间,那么我们可以安排到,下星期五。

普林斯顿公开课 - 国际座谈会课程节选

And if you put this in the well-ventilated area, if you prepare this outside, the h c n gas will actually be released into the air, so you're safe, you can eat it later.

而如果你把它们放在通风良好的地方，在室外处理，那么氰化氢气体,将会被释放到空气中，这样你就安全了，过后就可以吃了。

麻省理工公开课 - 化学原理课程节选

Biking in traffic is never safe, but you can make it a little bit safer.

上街骑单车不会绝对安全，但你可以采取点措施让它相对安全点。

喜欢自行车 - SpeakingMax英语口语达人

How do you get there? You go to go here, here and these could be busy roads, and so parents don't want to do it because of safety reasons, so you see how--when the country used to be laid out in a grid, like say New York City still is today, then people walk to get to places.

那要怎么才能去呢,你得绕道这里,还有那里的繁忙路段,出于安全原因家长们不允许孩子们这么做,可以看到,规划为网格状道路的地区,比如依旧保留了传统规划的纽约,人们出行是靠步行

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

then, you know, you're usually okay. You can stay safe.

那么你通常会没事儿。你可以很安全。

喜欢自行车 - SpeakingMax英语口语达人