уточнить

In a sentence

• Мне нужно уточнить детали встречи.

  I need to clarify the details of the meeting.

  Here, 'уточнить' is used in the sense of obtaining additional or precise information about the details of the meeting.

• Пожалуйста, уточните, когда прибудет поезд.

  Please specify when the train will arrive.

  Here, 'уточните' (imperative form) is used to request a precise confirmation of information concerning the train schedule.

• Он попросил уточнить правила игры перед началом.

  He asked to clarify the game rules before the start.

  Here, 'уточнить' is used in the sense of making the understanding or explanation of the game rules more precise or accurate.