trace.back.

trace.back. trace...back...翻译 trace… back…中文 trace…back…的中文是? trace back to后只能加时间么?trace back to its history? trace make the air clean意思：family tree:trace..back..::::your greats sth.can trace back to xxx还是sth.can be traced back to xxx?或者两者均可? Trace and trace是什么意思 trace是什么意思 Queen Marry could trace her ___(祖先)back to about 900 years ago.是填ancestor还是ancestors? follow,trace,and Faint trace strands of multivariate trace statistic是什么意思 请问trace the moment trace什么意思 trace怎么造句