以下为句子列表：
英文: The idea is to use a micromanipulator mounted on the side of the Stardust interstellar collector tray to extract keystones (tiny wedge-shaped sections of aerogel surrounding a track) directly from aerogel tiles while still in the tray.
中文: 想法就是用安置在星尘收集盘边缘的一台显微操作设备从还待在盘中的凝胶块里直接直接提取关键部分（一小块围绕着一个轨迹的楔形凝胶）。
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