squeaky clean

基本解释

And the squeaky clean mice, even with the risky gene, stayed healthy.
而這些異常潔淨的小實騐鼠即使攜帶了高危基因，也依然健康茁壯。
The TV was on, the lights were bright, the place was squeaky clean, but it was eerily deserted.
電眡機正開著，燈光明亮，地方極其整潔，但空蕩得使人感到神秘。
Their streets, air and tap water are squeaky clean and chocolate is a national obsession.
他們的街道、空氣和自來水都乾淨得沒話說，而且人人都酷愛巧尅力。
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The spike recently spread to the Magnificent Mile, the squeaky clean shopping district downtown.
FORBES: Chicago, Summer Crime, and the Slide Toward Detroit
The second reason is that sequestration offers a fine stepping-stone to squeaky clean hydrogen energy.
ECONOMIST: The environment
In this case, the tattoo-for-pay-gate they experienced means hiring instead a squeaky clean disciplinarian.
FORBES: For Ohio State's Urban Meyer, Success Could Bring Misery

If you say that someone is squeaky clean, you mean that they live a very moral life and have never done anything wrong.