That is an instrument used to measure wind speeds. For fixed weather stations, it usually looks like 4 halves of ping pong balls mounted on 4 spokes, that spin horizontally as the wind blows. However, I use a hand held anemometer to measure air flow in mines, and that looks like a calculator with a fan in the middle of it. Hold it, moving air spins fan blades, instrument has an LCD screen that shows air speeds.
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We would write either "How did it look?" or "What did it look like?"
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this is what he look's like
Why do you look like you do?
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They look like your face!!!
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