def convert_eng_character(text : str):
    """
    Convert half-size English characters to full-size ones.

    Parameters
    ----------
    text : str
        input text
    
    Returns
    ----------
    output : str
        converted text
    """
    #Upper English character
    output = text.translate(str.maketrans({chr(0x0041 + i): chr(0xFF21 + i) for i in range(26)}))
    #Lower English character
    output = output.translate(str.maketrans({chr(0x0061 + i): chr(0xFF41 + i) for i in range(26)}))

    return output