Stay way from him. He is the kind of a man who would betray anyone in his interest.
 hanger-on someone who would betray anyone in his interest指一個人巴結重要的人以得到利益. 指一個人哪裡對他有利他就往哪裡靠, 白話的翻出即可.
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 laciers, which leads to rising sea levels.