It is unwise to say that the trouble will not happen again, and the writer should content himself with stating that every effort will be made to prevent its recurrence.
回信中说保证今后不再发生这类问题，这是不明智的。只能说今后当尽力避免发生类似事件。
It is unwise to say that the trouble will not happen again, and the writer should content himself with stating that every effort will be made to prevent its recurrence.
回信中说保证今后不再发生这类问题，这是不明智的。只能说今后当尽力避免发生类似事件。
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