银行职员：我给您一个建议，请您保管好这张兑换单。
Bank Clerk: If I may offer a suggestion, please keep your exchange form.
银行职员：好的，我现在就为您填写兑换单。您请在那里坐一会。
Bank Clerk: Alright. I will fill out the exchange form for you now. You can take a seat over there for a moment.
如果您没有用完人民币要重新兑换成外汇时，您必须将兑换水单归还给银行。
You have to return it to the bank when you reconvert the unused RMB back into foreign currency.
如果您没有用完人民币要重新兑换成外汇时，您必须将兑换水单归还给银行。
You have to return it to the bank when you reconvert the unused RMB back into foreign currency.
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