Karate
noun
What can you do with empty hands? Karate, that's what. Karate is practiced without weapons, so with empty hands!
This word uses the kun'yomi of both kanji, and you haven't learned this kun'yomi for 空 yet. As long as you know the meaning, the reading should be easy, but here's a mnemonic to help you just in case:
Karate comes from (から) Japan!
こちらは私の空手の先生、ジェフ先生です。
This is my karate teacher, Jeff-sensei.
大学でも空手をやりたいと思ってます。
I want to do karate at university too.
近くのスポーツセンターに、新しく空手の道場ができたそうですよ。
There's apparently a new karate dojo at the nearby sports center.