当春风吹过中原大地的麦苗，中国粮食经济学会副会长、郑州大学党委书记李成伟代表将目光投向了田间地头的劳作场景。
The researchers paired the observations with computer simulations that follow gas as it streams along the galactic bar, forms clouds, and reacts to radiation and explosions. They turn those simulations into mockups and compare them directly with the survey data to test which scenarios best match what they actually see.
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