1. He is very faithful to his wife. He always keeps a healthy distance from other women.2. He has been head over heels for his wife ever since day one.
 faithful to somebody loyal to somebody head over heels for somebody白話的翻出即可. head over heels for somebody 是正統的美國成語, 形容一個人非常愛另一個人, 對他死心塌地.
1. 他對女友很專情.2. 他對他女友從一開始就死心塌地.
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 elting of glaciers, which leads to rising sea levels.