۴ فوریه روز جهانی سرطان است. به مناسبت این روز، امسال سازمان بهداشت جهانی نتایج یک تحلیل...
روز: اسفند ۵, ۱۴۰۴
دانشمندان می گویند ممکن است اندازه بزرگترین سیاره منظومه شمسی را بیش از اندازه واقعی آن تخمین...
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