1. I bought a GPS as I am directionally challenged.2. Even though I've been living in the Taipei city for ten years I am still a direction idiot.
 Directionally challenged have no sense of direction a direction idiot是美國最正統的說法. 也可以.
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 prblems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effect, which leads to melting of glaciers, which leads to rising sea levels.