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An independent Motor Survey Report to show that those repairs were
necessary and their costs reasonable.一個獨立的汽車檢查報告顯示，那些維修是有需要的，收費也是合理。

The invoices and receipts for your payment of the repair costs and
survey fee修理及檢查費所發的票據和收條，以供你付款。

Your clients' letter authorizing you to claim for their loss你的客戶們發的授權書，委托你為他們的損失索償。

Your clients' payment receipt for the Excess 你的客戶們為多出的費用繳款的收條。

An independent Motor Survey Report to show that those repairs were
necessary and their costs reasonable.

(Note: this first statement is not a complete sentence, it should be in the either way as follows:
1. It is an independent Motor Survey Report to show that those repairs were necessary and their costs reasonable.
這是一個獨立的汽車調查報告，顯示那些維修是需要的，而其收費亦合理。
2. 1. An independent Motor Survey Report shows that those repairs were necessary and their costs reasonable.
一個獨立的汽車調查報告顯示，那些維修是需要的，而其收費亦合理。)

The invoices and receipts for your payment of the repair costs and
survey fee
供閣下支付維修費和調查費的發票和收據

Your clients' letter authorizing you to claim for their loss
客人付予閣下索償損失的授權書

Your clients' payment receipt for the Excess
客人超額付款的收據

*****************************

1. 一个顯示修理是有需要及收费是合理的独立汽车检核報告。
2. 修理及汽车检核報告收费发票及你的付款收据。
3. 贵客户委托你代为追讨賠償的授权信。
4. 贵客户支付超出保险賠償外的費用收据。

如以下翻譯,中英對照:

An independent Motor Survey Report to show that those repairs were
necessary and their costs reasonable.
表示一個獨立馬達調查的報告，那些的修理是必要和合理他們的費用。

The invoices and receipts for your payment of the repair costs and
survey fee
您的修理費用和調查費的付款的發貨票和收據。

Your clients' letter authorizing you to claim for their loss
您的批准您的客戶的信件為他們的損失要求。

Your clients' payment receipt for the Excess
您的客戶的剩餘的付款收據。

全篇完整:

表示一個獨立馬達調查的報告，那些的修理是必要和合理他們的費用。您的修理費用和調查費的付款的發貨票和收據。您的批准您的客戶的信件為他們的損失要求。您的客戶的剩餘的付款收據。

一個獨立的汔車調查報告顯視，那些修理是必須的，而且收費合理。

修理費及調查費的發票和收據。

你的客戶受權你去替他們索償損失的受權信。

你的客戶支付超額的收據。

2009-07-11 06:28:04 補充：
對不起，第一句的｢顯視｣寫錯字，應該是｢顯示｣才對。