Update SDK_tutorial_online_zh.md

Yabin Li

2023-09-26 b1b6381cd5ad135f4d5aab7a7ef93b6bfc0e7bb7

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from abc import ABC
from abc import abstractmethod
from typing import Tuple
 
import torch
 
 
class InversibleInterface(ABC):
    @abstractmethod
    def inverse(
        self, input: torch.Tensor, input_lengths: torch.Tensor = None
    ) -> Tuple[torch.Tensor, torch.Tensor]:
        # return output, output_lengths
        raise NotImplementedError