但墨水用来写书写支票或者医疗处方的时候，防涂改功能就变得非常重要。

And when it comes to writing cheques or doctors' prescriptions, an ink's ability to resist attack is important.

youdao

但墨水用来写书写支票或者医疗处方的时候，防涂改功能就变得非常重要。

And when it comes to writing cheques or doctors' prescriptions, an ink's ability to resist attack is important.

youdao