safer是什么意思？

I've heard that at a factory in the area two pregnant women who were working with paint requested a transfer to a safer department, because they wanted to prevent damage to their unborn babies.

They requested to transfer to a safer department

Advocates of self-driving cars argue they will be safer than in cars driven by humans because they wouldn't get distracted or drive when tired.

In the second experiment meant to pit the mice's hunger against their fear, hungry mice were placed in a cage that had certain "fox-scented" areas and other places that smelled safer but also had food.

Roads would be quieter, people safer.

Offering a job to a man is the safer bet.

Almost all said that their cell phone was the way they stayed in touch with peers, one-third had used the cell phone to help a peer in need, and about 80% said the phone made them feel safer.

It is a much safer place than it used to be.

While that may make suborbital travel safer, it would add significant cost and complexity to an emerging industry that has until now operated largely as the playground of billionaires and dreamy engineers.