To cut down the dangers such as electrical current, he cutoff the electric source first.
为了减少危险，比如电流，他先切断了电源。
2
But the larger answer, I'd argue, is that by making up stories about our current predicament that absolve the people who put us here there, we cutoff any chance to learn from the crisis.
但我更能同意的答案是，通过编造谎言为使我们陷入困境的人开脱罪责，我们就失去了从危机中学习的机会。
3
Protection devices of maximum current steady and cut-off electric circuit avoid further damage of failure phone circuit board.