Closing off 小雪封山
closing off vegetation for regeneration 封育更新
closing time shut-off device 关断阀的关闭时间
Don't turn off the computer before closing all programs or you could have problems.
在关闭所有程序之前不要关掉电脑，否则可能会出现问题。
Closing off any document is difficult, since reviewers often come up with new ideas every time they read the document.
结束任何文档都是困难的，因为每一次阅读文档时检查人员经常会产生一些新的想法。
They weren't closing themselves off with the robot; they were actually more sociable than usual.
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。
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