X-ray examination of thin slabs of rock sometimes reveals the ghostly outlines of tentacles, digestive tracts, and visual organs of a variety of marine creatures.
对岩石薄片的X 射线检查有时会发现可怕的触角轮廓、消化道和很多种海洋生物的视觉器官。
This article reviews the progress and the application of X-ray fluorescence spectrometry in the field of rock and mineral analysis in China and surveys the development in the future.
回顾了我国X射线荧光光谱分析的进展及其在岩矿测试领域的应用，并展望了今后的发展趋势。
I set a new world record at last summer's X Games7, racing up8 a 60-foot artificial rock wall in just over 13 seconds.
去年夏季的极限运动中，我仅用了13秒就迅速爬上了60英尺高的人造岩石，刷新了世界纪录。
I set a new world record at last summer's X Games7, racing up8 a 60-foot artificial rock wall in just over 13 seconds.
去年夏季的极限运动中，我仅用了13秒就迅速爬上了60英尺高的人造岩石，刷新了世界纪录。
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