night and day

日以继夜地

nick-nack, nickel, nickel silver, nickname, nicotine, niece, niff, niffy, nifty, Nigeria, Nigerian, niggard, niggardliness, niggardly, nigger, niggle, niggling, nigh, night, night after night, night porter, night safe, night shift, night-bird, night-blindness, night-club, night-gown, night-life, night-light, night-line, night-long, night-school, night-shirt, night-soil, night-staff, night-time, night-watch, night-watchman, nightcap, nightfall,