The key question, however, to which there is yet no answer, is: what level of risk is necessary before action must be taken?

但是，那些仍没有确切答案的关键问题是：在行动必须被采取之前，什么样的风险水平是必要的？

youdao

The key question, however, to which there is yet no answer, is: what level of risk is necessary before action must be taken?

但是，那些仍没有确切答案的关键问题是：在行动必须被采取之前，什么样的风险水平是必要的？

youdao