健康专家们表示许多人由于环境中噪声级数的增加而使听力受到了永久性的伤害。
The health experts say many persons develop permanent hearing damage because of increasing levels of noise in the environment.
健康专家们表示许多人由于环境中噪声级数的增加而使听力受到了永久性的伤害。
The health experts say many persons develop permanent hearing damage because of increasing levels of noise in the environment.
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