英语词汇million-year-old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

双语例句

1
He came across the jawbone of a 4.5 million-year-old marsupial.
他偶然发现了一个450万年前的有袋动物的颌骨。
《柯林斯英汉双解大词典》
2
This 700-million-year-old formation gives few clues to the origins of modern animals, however, because paleontologists believe it represents an evolutionary experiment that failed.
然而，这个7亿年历史的地层几乎不能为现代动物的起源提供任何线索，因为古生物学家认为它代表的是一个失败的进化试验。
3
Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。

单词	million-year-old
释义	million-year-old 简明释义 adj．百万年的：表示年龄或历史长达一百万年的。网络释义短语 1 Japan Scientists Find Million-Year-Old Ice 日本科学家在南极洲发现了有百万年历史的冰双语例句 1 He came across the jawbone of a 4.5 million-year-old marsupial. 他偶然发现了一个450万年前的有袋动物的颌骨。《柯林斯英汉双解大词典》 2 This 700-million-year-old formation gives few clues to the origins of modern animals, however, because paleontologists believe it represents an evolutionary experiment that failed. 然而，这个7亿年历史的地层几乎不能为现代动物的起源提供任何线索，因为古生物学家认为它代表的是一个失败的进化试验。 3 Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago. 石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
随便看	true chemical constant true choline esterase true cholinesterase true chondroma true chromatin true circuit true claim true cleavage true climax true clover true code true coefficient true cohesion true coincidence true coincidence true colloid true color true color true color image true color image grabbing card true-color palette true colors true color unit true colour true colours