由于搭建安全原因，所以不鼓励搭建双层结构的展台。
Double story construction is not encouraged in this exhibition due to the safety reason.
于是双层结构绝不可能应用于电力工具的观念，就此被打破了！
The idea that double-wall construction could never work in power tool design was broken!
于是双层结构绝不可能应用于电力工具的观念，就此被打破了！
The idea that double-wall construction could never work in power tool design was broken!
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