I've never had a friend who would rish his life for me.

我还没有能冒死救我的朋友呢。

What do you think of those people who try to help other people at the rish of their lives?

你对那些冒着生命危险去帮助别人的人怎么看？

The life journey is born to be a rish full of challenges and lots of bravery and bitterness will be paid for it.

人生之旅本来就是充满挑战的冒险，为此将付出勇敢与痛苦的代价。

The results show that the health rish values due to chemical carcinogens are higher than the standard recommended by ICRP and their effect is much greater than that of non-carcinogens.

结果表明，化学致癌物对人体健康危害个人年风险度远超过非致癌物。