突然之间她就把自己封闭起来，停止了社交活动。
他们没有把自己和机器人一同封闭起来；他们实际上比平常更为合群。
They weren't closing themselves off with the robot; they were actually more sociable than usual.
灾难发生后大量放射性物质泄漏到周边区域，核电站周围很多农村被封闭起来。
Large quantities of radioactive material leaked into the surrounding area following the disaster and much of the countryside around the plant is sealed-off.
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