1to rest with; to lie in; to be due to (a certain attribute)
2(of a matter) to be determined by; to be up to (sb)
Example
diàn shì电视de的yōu diǎn优点zài yú在于tā它gěi给tǐ yù体育ài hào爱好zhě者tí gōng提供liǎo了gèng更dà大de的fāng biàn方便。
电视的优点在于它给体育爱好者提供了更大的方便。
Television has the advantage of providing sports fans with greater convenience.