Like the subordinate male protagonist in countless action movies who disappears half way through the movies, I have returned in time to save the day.
subordinate male protagonistmale protagonist 指男主角，而 subordinate male protagonist 指第二男主角
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 meltng of glaciers, which leads to rising sea levels.