5. A device, comprising: a storage medium storing a set of instructions; and a processor in communication with the storage medium, wherein when executing the set of instructions, the processor is directed to: receive multimedia data for play back and store the multimedia data in a multimedia data buffer, wherein the multimedia data comprises audio data; play back the multimedia data from the multimedia data buffer; pause play back of the multimedia data at a pause position; extract a target section of the audio data from the multimedia data buffer that precedes the pause position, the target section being a specified duration in length and comprising a plurality of semantic statements; identify a respective time interval between each pair of adjacent audio signals in the target section; determine, for each pair of adjacent audio signals, whether the respective time interval exceeds a first predefined time interval; when the respective time interval exceeds the first predefined time interval, identify the respective time interval as comprising a beginning of a semantic statement; select a position within one of the respective time intervals comprising a beginning of a semantic statement; set the selected position as a resume play back position; and resume play back of the multimedia data from the resume play back position when a resume condition has been met.
8. The device of claim 5 , wherein the one of the respective time intervals is randomly selected by the processor.