I think the smallpox vaccine we made now would probably be better, more effective, and safer than the vaccines we made in the '50s.

我相信若我们现在制造天花疫苗,应该会比五十年代的更有效更安全

耶鲁公开课 - 生物医学工程探索课程节选

And if you stay out here, then you know, you're kind of a little more safer,

如果你呆在这儿，你就稍微安全一点，

圣莫妮卡和洛杉矶 - SpeakingMax英语口语达人

As carefully as people work with radioactivity here, and using often much, much safer radioactive materials than radium bromide, and using them, and special hoods, and having special procedures, they still do a lot of checking with these Geiger counters to make sure everything's safe.

虽然在这里人们,用放射性物质都非常的小心，而且通常用的材料放射性,都比溴化镭要小得多，并且用的时候,都用特殊的容器,特殊的操作过程,但我们平时仍会用。

麻省理工公开课 - 化学原理课程节选

so in some sense it's safer, it avoids the 0, although I mean it's true it avoids the 0 but it also doesn't get the 5 and the 4.

某些情况下选下是比较安全的,因为他避免了0收益,我的意思是它的确避免了0收益,但选它也得不到5和4这连个最大收益

耶鲁公开课 - 博弈论课程节选

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

It's the safer answer if you can't decide whether or not your opponent's going to choose Left or Right, so you don't have to worry about having a payoff of 0.

当你无法判断你的对手会选左还是右时,选下是较安全的答案,因此你不必担心收益变成0

耶鲁公开课 - 博弈论课程节选