A: I think we have an obligation to protect our natural habitat.
B: I agree. That is why I promote recycling.
habitat
n. （动物的）栖息地，住处
A: How did he get your personal details?
B: He hacked into my computer and stole them.
hack
vt. １．劈，砍；２．骑（马）缓行
vi. １．劈，砍；２．开出租车；３．骑马缓行
