It took 40 injections of blue ink in order to complete this procedure.

这个过程总共注射了40次的蓝药水。

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Her gaze dropped to the files stacked so neatly in front of her. She spotted a streak of blue ink staining the sleeve of her lab coat.

她盯着桌上堆放整齐的两叠文件，却一不小心余光扫到白大褂袖子上的一道蓝墨水。

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Sign the contract in blue ink, not black ink. This, too, will make it easier to differentiate the signed original contract from photocopies.

最好用蓝墨水而不是用黑墨水来签署合同，因为蓝墨水可以很容易地让人区别出哪个是合同正本，哪个是影印副本。

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Remember, you may be a supply clerk, the kind who couldn't remember whether you ordered pens with blue ink or black ink -- but you can be a god for ten minutes when you make your own soda.

ENGADGET: Switched On: The rules of Soda Club (Part 1)

While researchers worked to perfect the ink, E Ink started creating large programmable in-store billboards, which were blue and white.

FORBES: Magazine Article

Only 12 when she was liberated from Bergen-Belsen, she bore the identification number from the concentration camp, tattooed on her arm in blue ink, for the rest of her life.

BBC: Roma Holocaust survivor and artist Ceija Stojka dies