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■on loan 借（來）

He has my car on loan. 他借了我的汽車。

I have the book on loan from the library. 我從圖書館借了這本書。

■on oath 發誓

Is she prepared to give evidence on oath? 他準備發誓作證嗎？

I testify on oath that I have not noticed the accident. 我發誓聲明我沒有注意到這場事故。

■on occasion 偶爾，有時

I meet him on occasion at the club or in the theatre. 我有時在俱樂部或在戲院里遇到他。

He reads detective stories on occasion. 他偶爾閱讀偵探小說。

■on offer 供出售的（尤指削價出售的）

There are only inferior on offer. 只有低檔貨出售。

Baked beans are on offer this week at the local supermarket. 當地超級市場本周烘豆罐頭大減價。

■on order 定購中，定制中

The shoes are on order and will be shipped next week. 鞋子已經訂購但尚未交付，下個星期就可以裝運了。

The textbook you require is temporarily out of stock, but it’s on order. 您要買的教科書暫時沒有貨，但是已經訂購了。

■on paper 在紙上；以書面形式；在理論上

The children drew the outline of flowers on paper, then colored them. 孩子們把花的輪廓畫在紙上，然后涂上顏色。

Why don’t you set your ideas down on paper? 你怎么不把你的想法以書面形式寫出來呢?

It’s a fine scheme on paper, but will it work in practice? 那計劃從理論上看不錯，不過實踐上是否可行?

■on purpose 故意地，特意地

“You’ve torn a page out of my book!” “I’m sorry, I didn’t do it on purpose.” “我的書給你撕掉了一頁啦！”“很對不起，我不是故意的。”

I came a bit early on purpose, to see if I could help you. 我特地早一點來，看看能不能幫你的忙。

■on request 一經要求

Catalogues are available on request. 備有目錄供索取。

The library will lend you this book on request. 只要你提出要求，圖書館就借給你這本書

【注】其中的on 也可換成 upon。如：

A pamphlet will be sent on [upon] request. 小冊子函索即寄。

■on record 正式記錄的；公開發表的

Last summer was the wettest on record for 50 years. 剛過去的這個夏季是50年來記錄中雨水最多的。

She’s on record as opposing the new law. 她反對這項新法律，這是有案可查的。

■on sale 出售，有售

Every article on view will be on sale. 每件展品都將出售。

This week’s edition is on sale now at your local newsagents. 本期周刊已公開發售，讀者可向各報販購買。

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