My boss must really have it in for me; that was the third lecture this week!

They [street Arabs] consort together and sleep in low doss houses where they meet with all kinds of villainy.

We have not drawn a picture, since Euler angle pictures of three-dimensional rotations are notoriously difficult to comprehend; what is very useful is for the reader to make a set of wire axes with labels to help follow the sequence of rotations.

I haven't been in contact with her for years.