为此，采取了加砌保护砖、控制风温、限制风量、改进导气管等方法，保证了炉缸处于良好的工作状态。

In order to keep the hearth in good working state, some measures are adopted such as added building protective brick, controlling air temperature, limiting wind quantity and improving windpipe etc.

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据他回忆，他学会了逃避石头和拳头，以保护自己的脸，甚至在当时，他就意识到这是他更大的成就的敲门砖。

As he recalled, he learned to dodge the stones and fists to protect his face, which he realized even then would be his ticket to greater things.

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巨大混凝土砖，保护人体以免辐射。

Concrete bricks to protect from radiation.

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