Here's the answer:
“怪不得”
(guài-bu-dé)
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning Chinese with Memrise get this phrase correct 87.66% of the time!
(guài-bu-dé)
Fun fact: the hundreds of thousands of people learning Chinese with Memrise get this phrase correct 87.66% of the time!