讲解: to explain...
及格: to pass an exam or a test, to meet a minimum standard...
牵: to lead along, to pull (an animal on a tether), (bound form) to involve, to draw in...
这些: these...
勺: spoon, ladle, centiliter (unit of volume)...
火车: train...
与: to take part in...
遍布: to cover the whole (area), to be found throughout...
传达: to pass on, to convey, to relay, to transmit, transmission...
自觉: conscious, aware, on one's own initiative, conscientious...
