The channel is almost choked with silt.是什么意思？

The channel is almost choked with silt.

水渠里淤了很多泥沙.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

channel

n. 频道，波道，渠道，途径，海峡；vt. 引导，开导，形成河道；

例句
The channel is only available on cable.
这个频道只有有线电视才能收看。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

almost

adv. 几乎，差不多，将近，快要，近乎；

例句
Despite considerable pain she has been getting out and about almost as normal...
尽管还很痛，她已经基本上行动如常。

choked

v. 填塞( choke的过去式和过去分词 )，（使）窒息，（尤指感情激动）而哽咽，因紧张而失灵；

例句
The men pushed him into the entrance of a nearby building where they choked him with his tie.
那些人把他推进附近大楼的入口处，用他的领带勒死了他。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

silt

n. 淤泥，泥沙；vi. 被淤塞，淤积；vt. 使淤积，充塞；

例句
Continued deposition of silt along the coast is crucial in counteracting the rise in sea level...
海岸边泥沙的不断沉积对于抑制海平面的上升起着至关重要的作用。