She dipped a quill in ink, then began to write.

她把羽毛笔蘸进墨水中，然后开始写字。

It's written in ink.

这是用墨水写的。

I'm skilful in ink and wash.

我擅长水墨丹青。

Grandma used todo them in ink.

奶奶过去经常墨水笔来填这些空格。

Please fill this form in ink.

请用墨水笔填写这张表。