Nov 12, 2018 · Richard Turere has been has been working hard on his inventions as well as trying to experiment with his version of an electric fence, therefore Chris Anderson has said, he has been "in the trenches". There is also possibly a reference to the danger of dealing with lions, relating to the dangers of war which relates to the origin of the phrase.

I have no idea what was meant. In AmE and in BrE there are two ways to express owning (having something) and I believe I explained it pretty straightforwardly. Unless one has been on the front trenches of teaching English, generally, one doesn't necessarily have this …