1. These festive adornments hark back to a time before skyscrapers, when more of Beijing looked like the last remaining " hutong " inside the Second Ring Road.
2. They hark back to a time when Detroit's Big Three automakers were the envy of the world and a symbol of American economic power.
3. Both of these building hark back to traditional beliefs and architectural practices of ancient China with their basis in religions like Confucianism.
hark back是什么意思