trace.back.

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trace.back.
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trace.back.
trace.back.

trace.back.
trace back:
追溯
例句与用法:
1.Her fear of water can be trace back to a childhood accident.
她很怕水,起因可归于儿时的一次事故.
2.The assiciation between our two countries can be traced back to last century.
我们两国之间的往来可以追溯到上个世纪.