这里很静，感情的宣泄，往往需要一个环境。
Very quiet in here, the feelings of anger, often require an environment.
我认为增强学习的一个特点就是它需要探索，所以在物理系统环境下使用它往往有些困难。
I think one of the things about reinforcement learning is that it tends to require exploration. So using it in the context of physical systems is somewhat hard.
风险是在承包商的出价计算过程中，往往需要在很短的时间框架和竞争的市场环境发生的一个重要因素。
Risk is an important factor in the bid calculation process of contractors, which often takes place in a short time frame and in a competitive market environment.
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