troubling
adj. 令人不安的; 令人烦恼的
例句
What is it that's troubling you?
是什么事使得你愁眉苦脸?
《牛津词典》
Is anything troubling you?
有什么事使你烦恼吗?
《柯林斯英汉双解大词典》
My back's been troubling me again.
我的背又在一直疼了。