A few months ago, for instance, I watched my mother-in-law (who was born and raised in a village in northern Iran) teach Nava how to knock on wood for good luck. I hadn’t realized this was so widespread a practice until I checked Wikipedia and found that variants exist in Bulgaria (chukam na dǎrvo), Georgia (kheze daḳaḳuneba), Indonesia (amit-amit jabang bayi), Norway (bank i bordet ) and some two dozen other countries.
Фото: Алексей Даничев / РИА Новости，这一点在同城约会中也有详细论述
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Earlier research has suggested that 10% of aerosols in the atmosphere are already contaminated by space debris.