Here's the answer:
“그녀가 더 잘했기 때문에 이겼어요”
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 92.79% of the time!
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 92.79% of the time!