Complex sentence: He is by training an agricultural engineer, teacher and veterinarian however by nature he is a true humanitarian, ethnologist and hyperpolyglot (he speaks Spanish, French, Italian, English, Tzotzil, Tzetzel and Mayan fluently).
Split into simpler sentences: He is by training an agricultural engineer, teacher and veterinarian. However, by nature he is a true humanitarian, ethnologist and hyperpolyglot (he speaks Spanish, French, Italian, English, Tzotzil, Tzetzel and Mayan fluently).