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關閉窗口 ■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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