1. When my husband and I decided to not have any more kids, I got my tubes tied and my husband got a vasectomy.2. To avoid having more stray dogs on the streets, the government dispatched a team to catch stray dogs and neuter them.
 get a vasectomy get one's tubes tied neuter男生結紮用 get a vasectomy，女生結紮用 get one's tubes tied，動物結紮用 neuter。
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 probles. 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.