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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
Use your shears to cut a piece of aluminum foil a few times. The number of times is up to you, 3 or 4 should suffice. It is equivalent to striking a knife blade against a sharpening steel.
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