Ask Lemmy@lemmy.world · 11 个月前

What's the most unexpectedly useful item you've ever bought under $20?

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What's the most unexpectedly useful item you've ever bought under $20?

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Ask Lemmy@lemmy.world · 11 个月前

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iknowitwheniseeit@lemmynsfw.com
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11 个月前
Probably you mean 85% of infrared, not 85 parts per thousand (or 8.5%) of ultraviolet?

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