是两种语言能够以一种稳定的趋势长期共存？
Can two languages co-exist in a stable fashion over a long period of time?
长期共存的思想已经存在很久了。
The idea of long-term coexistence had been there for a long time.
长期共存，互相监督，肝胆相照，荣辱与共。
Long-term coexistence, mutual supervision, treating each other with all sincerity and sharing weal and woe.
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