英语词汇oldest-known怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
First identified in 1969, komatiites are Earth's oldest known volcanic rocks and contain three times as much magnesium as do most volcanic rocks.
科马提岩于1969年首次被发现，它是地球上已知的最古老的火山岩，含镁量是大多数火山岩的三倍。
2
The Ediacara fossil formation, which contains the oldest known animal fossils, consists exclusively of soft-bodied forms.
包含已知最古老的动物化石的埃迪卡拉化石组，只含有软体动物。
3
Mocha coffee beans are one of the oldest known varieties of coffee in the world.
摩卡咖啡豆是世界上已知的最古老的咖啡品种之一。

单词	oldest-known
释义	oldest-known 简明释义 adj．已知最古老的：指已知的、发现的最古老的事物或现象。双语例句 1 First identified in 1969, komatiites are Earth's oldest known volcanic rocks and contain three times as much magnesium as do most volcanic rocks. 科马提岩于1969年首次被发现，它是地球上已知的最古老的火山岩，含镁量是大多数火山岩的三倍。 2 The Ediacara fossil formation, which contains the oldest known animal fossils, consists exclusively of soft-bodied forms. 包含已知最古老的动物化石的埃迪卡拉化石组，只含有软体动物。 3 Mocha coffee beans are one of the oldest known varieties of coffee in the world. 摩卡咖啡豆是世界上已知的最古老的咖啡品种之一。
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