As many as four-fifths of all the cells in the electric eel's body are specialized for generating electricity, and the strength of the shock it can deliver corresponds roughly to length of its body.
在电鳗的身体中，五分之四的细胞都是专门用来发电的。电鳗能释放的电流强度大体上与它的身体长度相一致。
2
Along this line 20,000-ton coal trains can reach a length of over 7 km pulled by powerful electric locomotives over an extra heavy duty track and driving down operating costs.
大秦线上运行的两万吨运煤列车长度可达7公里，由大功率电力机车牵引，大大降低了运营成本。
3
The team plans to be the first in the world to drive an electric vehicle the entire length of the Pan American Highway, which - at 16,155 miles - stands as the longest road on Earth.