ビル・ゲイツのインスタグラム(thisisbillgates) - 11月19日 10時51分

It's easy for those of us in rich countries to take the toilet for granted. Not only does it make our life comfortable, but it’s key to human health. Diseases caused by contaminated water kill more than 500,000 people every year. That's why sanitation is one of the most important issues our foundation works on and why there are few things I love talking about more than toilets. Click the link in my bio to learn more. #WorldToiletDay

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