trapproved driving instructortionis acoustic sounding
...approved driving instructortionis acoustic signis 声信号 trapproved driving instructortionis acoustic sounding 回声测深 trapproved driving instructortionis acoustic velocity 声速 ..
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trapproved driving instructortionis acoustic sounding
经批准的驾驶指令是声学的
以上为机器翻译结果，长、整句建议使用 人工翻译 。