科研之友
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<正>每当摄影师凯西进入荒野时，他都会带着他的无人机拍摄照片。但是这一次凯西用无人机帮助自己和他人摆脱了困境。主题语境：做人与做事篇幅：357词建议用时：7分钟 1 Whenever photographer Casey Ryan heads into the wilderness, he brings along his drone to capture photographs from a bird’s-eye view. Having the flying device with him on a recent excursion to the Cascades Mountain Range in Oregon likely saved his and another person’s life.
