1. C U 墨水，油墨　 coloured liquid used for writing, printing or drawing
2. U 墨汁　 black liquid produced by cuttlefish

　Indian ～　墨，墨汁
　invisible ～　隐显墨水，感应墨水
　permanent ～　永固油墨
　secret ～　隐显墨水
　washable ～　可洗去的墨水
　India ～　打样墨水，绘图墨水
　printer's ～　印刷油墨
　～ bag　墨汁
　～ bottle　墨水瓶
　～ eradicator　去墨药水
　～ eraser　退墨水用的橡皮、药水、刀子等
　～ essence　墨水精
　～ marks　墨迹
　～ stains　墨迹
　～ stick　墨锭
　～ writer　印字机
　write in ～　用墨水写字
　a drop of ～　一滴墨水

　Over the question much ink has already been shed.　在这个问题上已经花了不少笔墨。
　Can I have some red ink?　我可以用一些红墨水吗?
　The teacher smelt out the culprit by the ink on his fingers.　教师根据手指上的墨水发现了罪犯。
　Your compositions are to be written in ink, not pencil.　你的作文得用钢笔写，不能用铅笔写。
　Please sign your name in ink.　请你用钢笔签名。
　Mary scrubbed the ink stains off her hands.　玛丽擦掉了手上的墨水。
　They use various inks in this kind of printing.　他们用各种各样的油墨进行这种印刷。

 ♣ before the ink is dry
　墨迹未干；立刻　the ink is wet; immediately
　Don't touch it before the ink is dry.　墨迹未干！不要动它！

1. 我们有许多不同种类的墨水。
　［误］ We have a great variety of ink.
　［正］ We have a great variety of inks.
　［析］ ink是物质名词，通常是不可用复数形式的；但如果说一种红墨水，一种蓝墨水，一种黑墨水等，那么就可用作可数名词，也可用于复数形式。
2. 用墨水写。
　［误］ Write it with ink.
　［正］ Write it in ink.
　这封信要用墨水写。
　［误］ The letter is to be written with ink.
　［正］ The letter is to be written in ink.
　［析］ 说“用什么工具”，用 with. 但说“用墨水”“用各种颜色、油画颜料等”，该用in.

　vt.　给…上油墨 cover (sth) with ink

　～ a drawing　加墨水于图画
　～ one's fingers　以墨水弄污手指
　～ out　用墨水涂去
　～ over　用墨水加描
　～ in　给…上墨，用墨水描…

　He inked the printing plate.　他给印版上了油墨。
　That picture was inked into his mind.　那番景象印在他的心里。

 ♣ ink in　(v.+prep.)
　涂墨于…　complete (sth drawn in pencil or left unfilled) using ink
　She inked in a drawing.　她在图上上墨。
　She was inking in a pencil sketch.　她正在给铅笔画稿描上墨。
　You must ink in your signature, pencil writing is not allowed.　你必须用钢笔签名，用铅笔写是不允许的。
　The revisions can now be inked in.　用铅笔修改的字句现在可用墨水笔描上了。
 ♣ ink out　(v.+adv.)
　用墨水涂去　sweep off sth with ink
　Ink out the errors.　用墨水涂掉错误。
　Please ink out the following lines.　请用墨水把下面的线涂掉。

　［词源］　中古英语enke<古法语enque（墨水）