My German uncle

My aunt and uncle came to Japan from Germany.

My uncle is German,and they live in Germany with my two cousins.

He works for an environmental engineering and a proffessor.
His works has a relation to several cities of Japan. So he often comes
to Japan with my aunt as an interpreter.

He is so much busy man,so he rarely comes to Takamatsu(he
can't drop by Tamakatsu.)

He speaks German and English,and Japanese a little, so I spoke himin English.
I needed my aunt's interpretation before,I managed to talk him without her so.

I owe it to Eigozuke or Justin's teaching?