In the oriented blasting, proper demolition parameters, boring pattern and orienting devices are chosen in order to demolish a brick chimney safely and exactly according to the designed direction.

采用定向控制爆破，选用合理爆破参数、炮眼排列、导向装置，准确地按设计方向，安全地拆除了砖质烟囱。

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There are endless possibilities on completely turning a boring design around by just using an interesting pattern.

转上有完全只用了一个有趣的图案设计围绕一个无聊的无限可能性。

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But drill is boring, especially repeating the pattern.

但是练习很枯燥，㣕特别是句型练习。

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