New underwater exhaust outlet reduced noise levels while allowing peak performance.
新的水下排气口降低噪音水平，同时允许的峰值性能。
The new Jeep benefits from improved aerodynamics, reduced noise levels and a more spacious interior.
从改善新吉普车利益的空气动力学、减少噪音和一个更宽阔的内部。
The program also has decreased accident rates by 90 percent in the corridors where the system operates, scrapped more than 2,100 old buses, and reduced noise levels by 3-10 decibels.
随着该规划的实施，系统运行地区的交通事故发生率降低了90%，2100多辆老旧公交报废，噪音水平降低了3 - 10分贝。
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