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1.The hearing aid test apparatus is essential for people with hearing loss.
听力辅助设备测试装置对于有听力损失的人来说是必需的。
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2.The hearing aid test apparatus can help people improve their hearing ability.
听力辅助设备测试装置可以帮助人们提高听力能力。
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3.The hearing aid test apparatus is used to measure the effectiveness of hearing aids.
听力辅助设备测试装置用于测量助听器的效果。