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1. The engineer had to install a concealed pipe under the floor to bypass the obstruction.
工程师不得不在地板下安装一个隐蔽的管道来绕过障碍。
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2. The construction crew carefully concealed the pipes during the installation process.
施工团队在安装过程中小心地隐藏了管道。
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3. The homeowner decided to conceal the exposed pipes in the kitchen to improve aesthetics.
房主决定将暴露的管道藏在厨房里，以改善外观。