1. A method for transcription of a lexical unit from a first alphabet into a second alphabet, the method executable at a server, the server being connected to a client device over a communication network, the server executing a machine learning algorithm (MLA), the method comprising: acquiring, by the MLA, a pair of (i) the lexical unit in the first alphabet, and (ii) the corresponding transcription of the lexical unit in the second alphabet, the lexical unit and the corresponding transcription of the lexical unit having been divided into respective segments, such that: within the pair, every segment of the lexical unit has a corresponding segment in the corresponding transcription of the lexical unit; and each lexical unit comprises one of: (i) a sequence of sequentially alternating vowel and consonant segments, (ii) a single vowel segment, (iii) a single consonant segment; each vowel segment consisting of at least one vowel and each consonant segment consisting of at least one consonant; defining, by the MLA, for each given segment of the lexical unit, its context; training the MLA to calculate a theoretical frequency of at least one second alphabet character representing transcription of a particular given segment based on the context of said particular given segment of the lexical unit; repeating the acquiring, the defining and the training with respect to a plurality of pairs, each respective pair comprising a respective lexical unit and a respective corresponding transcription; receiving, from the client device, a request to transcribe a second lexical unit, from the first alphabet, into the second alphabet; splitting the second lexical unit into one of: (i) a single vowel segment, (ii) a single consonant segment, (iii) a sequence of sequentially alternating vowel and consonant segments; applying, by the MLA, the theoretical frequency of the transcription of each segment of the second lexical unit, the theoretical frequency based on the context of each given segment in the second lexical unit; generating, by the MLA, the transcription of the second lexical unit into the second alphabet; and sending, to the client device, instructions to display on a display screen of the client device the transcription of the second lexical unit in the second alphabet to the user.