有时候它们会偶然地在池底游动，然而在其他时间里它们被训练者指导，并且在它们快速游动时会得到奖赏。
Sometimes they swam around their tanks casually, whereas at other times they were directed and rewarded by their trainers to swim at their fastest.
并且角鲨会在被酒精浸泡的时间里游动时就会发出其中一种不同寻常的攻击。
And Dogfish is also bringing back one of their more unusual forays into alcohol-infused time travel.
文章在可数状态空间中建立了时间随机环境下随机游动的一个广泛的模型。
A general model of random walk in time-random environment in any denumerable space is established.
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