Artificial lighting can account for 15 percent of a home's electricity use.
人工照明可以占百分之十五的家庭的用电。
Tunnel artificial lighting is an important guarantee for the safety of the tunnel driving.
隧道人工照明是隧道通行安全的重要保障。
Tunnel artificial lighting is an important guarantee for the safety of the tunnel driving.
隧道人工照明是隧道通行安全的重要保障。
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