求翻译：国外研究主要分为三种观点：汇率变动对贸易收支有负面影响；汇率变动有利于贸易收支；汇率变动对贸易收支无长期显著影响。是什么意思？

Foreign study is divided into three perspectives: the exchange rate changes have a negative impact on the trade balance; exchange rate changes conducive to the balance of trade; exchange rate changes, no long-term significant impact on the trade balance.

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The overseas research mainly divides into three viewpoints: The exchange rate change has the negative influence to the trade revenue and expenditure; The exchange rate change is advantageous to the trade revenue and expenditure; Exchange rate change to trade revenue and expenditure not long-term rem

Foreign research is divided into three main perspectives: changes in exchange rates have a negative impact on the trade balance; changes in the exchange rates in favour of trade balance; changes in exchange rate on trade balance with no long-term significant impact.

正在翻译，请等待...