After collecting a sample of fresh spatter, a geologist is silhouetted against a fountain of molten lava spouting from Hawaii's Mauna Ulu.

夏威夷毛纳。乌庐(Mauna Ulu .)活火山喷发形成熔岩喷泉，采集样品的地质学家剪影。

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PRINCIPLE This Method describes the procedure for determining the time required for a sample of fresh concrete to achieve full compaction when subjected to a standardized vibratory action.

原则本《方法》确定了在标准振荡作用下，混凝土拌合物样本要达到完全压实状态所需时间的测定程序。

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Of the 20 fresh, pristine-looking asteroids in their sample, each had traveled close to Earth within the distance from the Earth to the moon in the past 500,000 years.

在这些样本中，有20个新鲜的、看起来是没有受损的小行星，在过去500000年里都曾经飞临地球- - - - -在地月距离之内。

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Well, let me come up with a sample set of elements here and let me go ahead and just get some fresh white board space.

下面我用一个元素的样本集来说明,我先找一些可用的白板空间。

哈佛公开课 - 计算机科学课程节选

Drilling a few centimetres inside a rock provides a fresh sample that is free from the alteration that can occur at the surface as a result of weathering or radiation damage.

BBC: Curiosity Mars rover hammers into rock