Landscapes were already degraded, rivers were silted with precious topsoil.

景观已经退化，河流被珍贵的表土淤。

Second, blood backing up in the systemic veins leads to portal systemic shunts, which happens in the three points where the systemic venous system and hepatic portal system are connected.

其次，淤脉的血液造成门脉-脉系统分流，发生三个，脉系统与肝脏门脉系统相连接的地方。

And at night we would pump one bucket full of water, and it would be half full of silt by the next morning the kind of muddy silt would have sunk to the bottom.

晚上我们会打满一桶水，而第二天早上可能就会有半桶的淤，这些淤都沉到了桶底。