figure-example-of-iterative-back-translation.tex

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\node [anchor=south](d1) at ([xshift=-0.7em,yshift=5.5em]remark1.north){\small{真实双语数据：}};
\node [anchor=west](d2) at ([xshift=2.0em]d1.east){\small{伪数据：}};
\node [anchor=west](d3) at ([xshift=2.0em]d2.east){\small{额外单语数据：}};
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\node [anchor=north] (d4) at ([xshift=1.82em]d1.south) {\small{训练：}};
\node [anchor=north] (d5) at ([xshift=0.5em]d2.south) {\small{推断：}};
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