By reading the Watchtower magazine every month I kill two birds with one stone. I expand my knowledge about the creatures on Earth, and I also learn about the Bible.
kill two birds with one stone這是正統的美語說法.
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 glacier, which leads to rising sea levels.