In their place were sheep, their white wool blotched with blue or red ink to mark them as someone's property.

取而代之的是羊群，它们白色的毛绒上星星点点的蓝色或者红色痕迹是为了区别它们各自所属的主人。

youdao

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。

youdao

The address was written in small letters in blue ink.

VOA: special.2009.12.26

First, though, the blocks are tested with red and then blue ink and corrections are made to the carving.

UNESCO: Culture

From 1819 to 1843, Truro's postmistress was a Miss Thomas, who preferred the use of blue ink instead of the normal black stamping.

BBC: Rare Truro blue marked letter found in Exeter archive

Outside a polling station in the wealthy suburb of Petionville, Zephyr Watson(ph) shows his thumb which was dipped in blue ink when he voted half an hour before.

NPR: Haitians Flock to Vote in National Elections