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1. The ventilating tower is designed to improve indoorair quality.
通风塔旨在改善室内空气质量。
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2.The construction of the ventilating towerhas been completed.
通风塔的建造已经完成。
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3.The ventilating tower is essential formaintaining a healthy living environment.
通风塔对于保持健康生活环境至关重要。