You can't let it get you down.
你绝不能因此而气馁.
Don't let it get you down.
不要让这件事情影响你的心情.
Don't let it get you down.
不要因为这样而情绪低落.
Don't let it get you down.
别让这事坏了心情.
Don't let it get you down.
不要让这件事情影响你的心情.