我们在落基山脉徒步时看到一只土拨鼠在草地上吃草。

We saw a ___marmot grazing in the meadow during our hike in the Rocky Mountains.

别像个懒虫似的整天窝在沙发上，该起来活动活动了！

Don't be such a ___couch potato lying on the couch all day - it's time to move around!