1. He is a troublesome child.
    他是一个令人头痛的孩子。

1. 麻烦：不过,该官员也进一步强调,如果是台湾方面片面宣布独立的话,那将一个很麻烦(troublesome)而危险(dangerous)的问题.

2. 烦：不过,该官员也进一步强调,如果是台湾方面片面宣布独立的话,那将一个很麻烦(troublesome)而危险(dangerous)的问题. (乔木)

3. 令人烦恼的：8. 精确的accurate | 9. 令人烦恼的troublesome | 10. 发生、出现occur

1. 令人烦恼的;令人头疼的;烦人的
    You use troublesome to describe something or someone that causes annoying problems or difficulties.

    e.g. He needed surgery to cure a troublesome back injury...
           他需要做手术来治好烦人的背伤。
    e.g. Parents may find that a troublesome teenager becomes unmanageable.
           父母会发现令人头疼的青少年变得难以管教。

2. (形势、问题等)麻烦的，困难的，棘手的
    A troublesome situation or issue is full of complicated problems or difficulties.

    e.g. The economy has become a troublesome issue for the Conservative Party.
           经济状况已成为保守党的一大难题。

1. difficult to deal with

    e.g. a troublesome infection
           a troublesome situation