Between the river/边界河

Needle exchange office
Today i've been running between Burma and China for a few times.In fact i had some problem with my border permit that i can't pass the check point,so i take another river way to come over to China side to check my emails.with 2 of my collegues,we crossed border by passing that small river.
因为没有办到边境证只有偷渡过去了，今天往返于中缅两边的办公室4次了。那条小河就是划分边界的线，还有人在那做背人过河的生意。我们单位的诊所在缅甸那边，吸毒的针具交换在河对岸的中国.