特写：双手正在挑选玉米粒进行水分测试

-up image showing a woman's hand with red fingernail polish delicately sorting through a pile of yellow corn kernels on a white table surface. This appears to be part of a moisture testing or quality control process in an agricultural or grain testing facility. The scene suggests human involvement in selecting a representative sample for scientific or industrial analysis. The texture of the corn and the clarity of the gesture emphasize precision and care in the sample selection.

光厂(VJshi)视频提供特写：双手正在挑选玉米粒进行水分测试视频素材下载，适用于农业，玉米，谷物，转基因，科学实验等主题的内容创作。

作者署名：Ryan McKeever/Getty Images/华夏视觉