fix the issue of concatenating multiple VAD segments for en-bpe

雾聪

2023-10-10 75be3ceccdf02599c43c7e9888bfdb6ba561fc71

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one    12
two    1
three    2
four    3
five    4
six    5
seven    6
eigh    7
nine    8
ten    9
eleven    10
twelve    11