def __call__(self, sample, return_str=False):
return self._detokenizer.detokenize(sample, return_str=return_str)<EOL>
Parameters
----------
sample: list(str)
    The sentence to detokenize
return_str: bool, default False
    True: return a single string
    False: return a list of words

Returns
-------
ret : list of strs or str
    List of words or detokenized text