Can the phrase down under be used in a sentence?

Absolutely! Here are some examples of how you can use "down under" in a sentence:

* Informal: "I'm going to visit my cousins down under next year."

* Descriptive: "The animals down under are truly unique."

* Figurative: "After a long day, I felt like I was living down under the weight of my responsibilities."

Note: "Down under" is a colloquial term often used to refer to Australia and New Zealand. It can be used in a casual, informal way.