estudiándolos

Estudiándolos is the present participle of the Spanish verb estudiar, meaning "to study." As a gerund, it indicates an ongoing action of studying. The "-los" suffix signifies that the object of the study is plural and masculine, or a mixed group of masculine and feminine items or concepts. Therefore, "estudiándolos" translates to "studying them." This grammatical form is used to describe an action that is happening concurrently with another action or as a subordinate clause. For example, in the sentence "Estoy aprendiendo mucho estudiándolos," it means "I am learning a lot by studying them." The specific context in which "estudiándolos" appears would determine what "them" refers to. It could be books, subjects, problems, or any other plural entity being subjected to study. The formation is typical of Spanish gerunds, where the infinitive stem is combined with the appropriate ending to denote continuous action.