嗅觉标准液是可使人的嗅觉阈值测试标准化，科学化，数量化。
The testing of olfactory threshold can be standardized scientifically and quantitatively by using standard olfactory liquids.
嗅觉阈值减少是有潜伏期的，他解释道，这意味着孩子们没有感觉到什么变化，但在测试结果中会显示异常。
The smell-threshold reduction was “preclinical,” he explains, meaning the children wouldn’t notice the change but it could be picked up with testing.
嗅觉阈值减少是有潜伏期的，他解释道，这意味着孩子们没有感觉到什么变化，但在测试结果中会显示异常。
The smell-threshold reduction was “preclinical,” he explains, meaning the children wouldn't notice the change but it could be picked up with testing.
嗅觉阈值减少是有潜伏期的，他解释道，这意味着孩子们没有感觉到什么变化，但在测试结果中会显示异常。
The smell-threshold reduction was “preclinical,” he explains, meaning the children wouldn't notice the change but it could be picked up with testing.
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