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1·As this is the first deal between us, I hope we can trade on customary terms, i. e., letter of credit payable against sight draft.

由于这是我们之间进行的第一笔交易，我很希望能够遵照惯例，也就是说，用即期信用证付款。

2·You are no douvt aware of the custom of the wholesale trade that opening orders are payable in cash.

贵方必定了解批发行业的惯例，即初次订货采用现金付款方式。

3·The exchange rate risk that the construction unit of the highway faces is shown as the trade risk mainly. The risk is the change of the receivable assets'and the payable debts'value.

公路建设单位面临的汇率风险主要表现为交易风险，即由于外汇率波动而引起的应收资产与应付债务价值变化的风险。