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He is burred by an avalanche and have to be dig out .

他遇雪崩被埋住了，得把他挖出来。

Thoroughly examine the tools for any burred spots each time a sealing ring is fitted .

每次安装密封圈时，都应彻底检查工具上是否有毛刺。

The tools should be thoroughly examined for any burred spots each time a sealing ring is fitted .

每次安装密封圈时，都应彻底检查工具上是否有起刺点。