CATANIA REPLIES:lots of people are curious aboutwhy these eels don’t shock themselves— including me. No one seems to know the details, but I think Rogers is on the right track. It seems inevitable there are paths of very low resistance, along with areas of electrical insulation, within the animals (we do know the latter exists around their electrocytes—the biological batteries). But I can say this much: the eels are just barely protecting themselves. Sometimes an eel that has curled itself to amplify the electrical effect on its prey ends up activating its own fins with each high-voltage volley. So the experience is at least mildly shocking, even to the eel.
on the right track表示步入正轨，走上正确的道路
end up doing 是用来表示结果，以…的结局而告终
As long as she keeps doing that, she’s on the right track.
We've seen that Wilson's grand designs ultimately failed but he was on the right track for world peace.
We could all end up being friends.
The result is that you could end up paying tax on the same income to two states.
枪击案致死率That adds up to 136,000 Americans harmed or killed annually by gun violence. Worse, the death side of this sad ledger is growing, according to the Centers for Disease Control and Prevention, in an upward trend that began in 2015. While mass shootings in Sutherland Springs, Tex., or Parkland, Fla., dominate headlines, people such as the St. Louis children, cut down singly or by twos or threes, make up the bulk of the victims. Guns are a clear and present danger in this country, where there are about 393 million civilian-owned firearms—more than enough to put one in the hands of every man, woman and child and amounting to the highest rate of gun ownership in the world by far.
a collection of financial accounts这里指的是记录在案的 tragic record，枪击案致死的数字依然呈上升趋势。
Whether lauded, vilified or mocked, Trump continues to dominate headlines and consume an oversized portion of America's political oxygen.