The change separated populations of insects now living along opposite shore, completely cutting off gene flow between them.
这个变化使当地的昆虫被分隔开来，现在分居于河的两岸，彼此的基因流动已被完全截断。
To their surprise, they found just the opposite of her result: Instead of moving with the flow, as Swartz had found, the cancer cells moved upstream.
令他们吃惊的是，他们只发现与她的研究发现相反的结果：癌细胞不是像施瓦茨所发现的那样沿着流动而迁移，它们是逆流迁移。
These flow in opposite directions around the circuit.
这两种离子在电路中向相反方向流动。
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