10. A speech for recognizing speech, comprising: a microphone configured to receive an utterance from a source, the utterance potentially containing a particular expression, wherein the particular expression is capable of being associated with at least two different meanings; a processor selectively and operatively connected to the microphone, the processor including: computer readable code for determining that the utterance contains the particular expression; computer readable code for splitting the utterance into a plurality of speech frames, each frame being assigned a predetermined time segment and a frame number; and computer readable code for indexing the utterance to i) a predetermined frame number, or ii) a predetermined time segment, the indexing identifying that one of the plurality of frames includes the particular expression; and means for re-presenting the one of the plurality of frames including the particular expression to the speech recognition system to verify that the particular expression was actually recited in the utterance.
20. The system as defined in claim 10 wherein the system is configured to be used in a mobile vehicle.