“balance of trade”的概念、定义、翻译、参考文献-科学参考

单词	balance of trade
释义	balance of trade Encyclopedia 理学【对外贸易及投资】释 balance of trade进出口贸易差额一国在一定时期内出口总额与进口总额之间的差值，是货物进出口贸易差额和服务进出口贸易差额的合计。
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