1. My boss would not give me a raise, but he offered me a shorter workweek as a compromise.2. My boss would not give me a raise, but he offered me a shorter workweek as a concession.
 compromise concessioncompromise 跟 concession 都指妥協，都很常用。
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 o glaciers, which leads to rising sea levels.