习俗: custom, tradition, local tradition, convention...
走过: to walk past, to pass by...
腔: cavity of body, barrel (e.g. engine cylinder), compartment, tune, accent of speech...
著作: to write, literary work, book, article, writings...
博览会: exposition, international fair...
孙子: grandson, son's son...
对: couple, pair, to be opposite, to oppose, to face, for, to, correct (answer), to answer, to reply, to direct (towards sth), right...
提高: to raise, to increase, to improve...
煤: coal...
目前: at the present time, currently...
