Several of these flow into a branch sewer, which joins first a sub-main and then a main sewer taking it to the treatment plant.

这些街道污水管又相结一条污水支管。此支管与次干管连接，然后经主干管将污水送至污水处理厂。

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This branch, which completes the collecting sewer, is separated from it, under the Rue Menilmontant itself, by a pile which marks the dividing point of the waters, between upstream and downstream.

这条支管，作为总管的辅助管道，就在梅尼孟丹街下面被一块把水分成上游和下游的高地与总管分隔开。

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The tunnels merge and separate, feed into the sewer system, and branch out again for hundreds of metres, emerging right outside town, amid the bushes of a dry river bed.

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