The ____(autonomy) region has been established since the 1950s.
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Most scientists in the lab risk ____(expose) to harmful radiation.
The ____(promise) singer made his debut at national theater.
Once the jewels were safely locked up in the bank, he had no more anxiety about their ____(secure).
谈谈你所知道的信息化装备有哪些;简述信息化装备对现代作战的影响。