众所周知，钓点水域的深浅不同，对垂钓时脑线的长度要求也有所不同，造成我们每次出钓往往要准备几套钓线或脑线，以备不同的水域垂钓。能不能用一套钓线，经过调整而适用于不同的水域（也就是说可根据水的深浅情况任意调整脑线长度）？笔者有一法，如下：用一根70厘米长的脑 As we all know, the fishing waters of different depth, the length of the fishing line requirements are different, resulting in each of our fishing often have to prepare several sets of fishline or brain line to prepare for different fishing waters. Can you use a set of fishing line, adjusted for different waters (that is, according to the depth of the water can be arbitrarily adjusted brain length)? I have a method, as follows: With a 70 cm long brain