So to prevent overproduction, the upstream doesn't "push" finished parts to the downstream, but instead it is the downstream that actively pulls (fetches) the parts from the upstream.

为了避免生产过剩，上游工序不是将成品零部件“推”给下游工序，反而是下游工序主动地从上游工序中拉出(拿)零部件。

youdao

Autologous chemotaxis produces downstream migration because the concentration of ligands is increased on the downstream side of the cell, as Swartz had found.

正如施瓦茨所发现的，自体同源趋化作用产生顺流迁移，因为配合基浓度在细胞的下游边上的以增强。

youdao

If only the identity of the middle tier service is propagated to the downstream service, the downstream service does not have proper control over audit and authorization of access to the service.

如果只有中间层服务的标识传播到下游服务，则下游服务不能对服务访问审核和授权进行正确的控制。

youdao

They would cross the river a little downstream, turn and attack.

VOA: special.2009.11.19

Because in doing that, Python would then have a value that it could pass on into some other part of a computation, and if it wasn't what I wanted, I might be a long ways downstream in the computation before I actually hit some result that makes no sense.

因为如果这样做的话，Python会将,输入的值传递到下面的,一些运算中去，如果这个值的类型不是我想要的，我可能会在得到,一个毫无意义的结果之前,经历一个很长时间的,计算过程。

麻省理工公开课 - 计算机科学及编程导论课程节选

Heavy rains and flooding in states up river in the past week, are exerting enormous pressure downstream.

VOA: standard.2010.05.09

"I know that issue is downstream, if we wind up going downstream, " Klein said during closing arguments.

NPR: Stockton Bankruptcy Decision Only The Beginning

Downstream earnings have snapped back so far that I prefer pure play oil producers like Apache with no downstream cyclical vulnerability.

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Other daredevils have tried their luck walking over Niagara, but farther downstream and not since 1896.

CNN: Daredevil completes walk across Niagara Falls