This is the course for you. The lead teacher is bilingual in English and Farsi. Technical English Student Book. Mechanical Engineering. Business English lessons and notes in PDF Jeremy Kemp Tell the truth: every time you have to talk on the phone with foreign clients, or participate in a video conference with the United States, or draw up a formal document in English, you feel lost in a world of words, technical terms, and customs that still is a little bit confusing at times.