We have constrained ourselves in all kinds of ways to make our lives and others' lives easier.
constrain oneself< >
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 glaciers, which leads to ring sea levels.下一題 - 牛仔布 f我要發問