1. The fisheries department is using electrofishing to monitor the fish population in the river.
渔业部门正在使用电渔技术监测河流中的鱼类数量。

2. Electrofishing is considered to be a more efficient and less destructive method of sampling fish populations compared to traditional methods.
相对于传统方法，电渔被认为是一种更高效、更少破坏性的采样鱼类数量的方法。