YSK the Average Life Span is 78.54 (US) - 知っておくべきこと

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YSK the Average Life Span is 78.54 (US)

YSK the Average Life Span is 78.54 (US)
from /r/YouShouldKnow

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← YSK: Prepare your teenagers to be an adult better than your own parents prepared you
YSK: You could easily estimate the charge of AA/AAA battery cells by dropping them vertically on a table from a height of around an inch. Fresh batteries will drop still, while discharged ones will bounce like a ball. →