The college dropout decided to come back to school and work hard in school. He became a changed person. Eventually he was ranked number one academically in school.
 become a changed person become a changed man白話翻出即可
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain of problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effect, which leads to melting of glacirs, which leads to rising sea levels.