Because of the pressure drop in the glomerulus,

由于肾小球中的压力差
the low pressure in Bowman's space, this space that surrounds it,

绕在肾小球周围的鲍曼氏囊内为低压
fluid is driven through the walls of the capillary and collected outside.

液体经毛细血管壁被压入外周并收集起来
What is produced there is really, what I called last time,

那里产生的东西是我上次提到过的
an ultra-filtrate of plasma.

叫做血浆超滤液的东西
That is the urine or the filtrate that's going to become urine, at this point,

那便是尿液或将成为尿液的滤液此时
would be identical to plasma in composition

它的成分与血浆相同
except all of the big items are removed;

除了所有被移除的大分子的成分
all the large molecules, all the cells are removed,

所有的大分子所有的细胞都被移除了
other than that it's identical.

除了那些两者是相同的
The concentration of sodium in the filtrate

滤液中钠的浓度
is the same as the concentration of sodium in the plasma,

与血浆中钠的浓度相同