to the neighboring molecule.

直接到达临近的分子
'Para' means near,

Para的意思是接近
'paracrine' means 'a signal from nearby'.

paracrine意思是来自附近的信号
Endocrine are signals that get carried through the blood system.

内分泌系统的信号通过血液来传递
The cell that's producing the signal produces

发出信号的细胞产生信号分子
enough of the molecule so that it enters the bloodstream,

数量十分充足能够进入到血液中
it circulates throughout your body,

信号随着血液流遍全身
eventually it reaches a cell at a great distance,

最终到达较远处的细胞
which has a receptor for that ligand

在这些细胞上有与配体配对的受体
and the signal gets received.

信号被细胞接收
An example of that is, of course,

这种信号传递的例子
insulin which is produced by cells of the pancreas

就是胰脏细胞产生的胰岛素