moth
n
1 insect like a butterfly but less brightly coloured, flying mainly at night and attracted to bright lights 蛾.
2 (also clothes moth) small similar insect that breeds in cloth, fur, etc, its young feeding on the cloth and making holes in it 衣蛾.
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.