The vacuum hovers and scrubs the same piece of floor for a while (almost 30 seconds sometimes) to make sure whatever stubborn grime is getting the extra attention it needs. Depending on the size of the stain, the whole vacuum will also swing back and forth in a half circle to come at the stain from more than one angle (the same idea as Shark's Matrix Cleaning system in previous vacuums). I sent the UV Reveal to deal with the muddy shoe storage zone near my front door, which was caked in both dried slush from the past two days and brown water that was just tracked in a few minutes prior. It left the whole area gleaming — there's not much arguing with a UV light checking the work for you.
圖像加註文字，2009年伊朗總統選舉之後爆發被稱為「綠色運動」的抗議行動。前內政部副部長塔吉扎德（Mostafa Tajzadeh）將該結果形容為「選舉政變」。他被監禁七年，並聲稱這是「穆傑塔巴·哈梅內伊的直接意願」。
。关于这个话题，PDF资料提供了深入分析
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