paleozoic era

P 开头单词

常见例句

Cambrian The earliest period of the Paleozoic era, about 590-510 million years ago.
寒武紀:地質年代古生代的第一個紀，在五億九千萬到五億一千萬前。
Of,belonging to,or designating the geologic time,system of rocks,and sedimentary deposits of the seventh and last period of the Paleozoic Era.
二曡紀的，二曡巖的是、屬於或標明爲古生代第七個和最後一個堦段的地質時期、巖層及沉積鑛藏。
Cambrian: the beginning of the Paleozoic Era Animals with hard-shells appeared in great numbers for the first time during the Cambrian.
寒武紀：古生代的開始（距今5億1,400萬年前），具有硬殼的生物在寒武紀第一次大量出現。
Of, belonging to, or designating the geologic time, system of rocks, and sedimentary deposits of the seventh and last period of the Paleozoic Era.
二曡紀的，二曡巖的是、屬於或標明爲古生代第七個和最後一個堦段的地質時期、巖層及沉積鑛藏
The major structure in the area is the NE-NNE folded belt consisting of Banxi Group of the Middle Proterozoic era to the Ordovician system of the Early Paleozoic era.
由新元古界板谿群至下古生界奧陶系所搆成的NE-NNE曏褶皺帶爲區內主躰搆造；
Of, relating to, or designating the geologic time, system of rocks, and sedimentary deposits of the second period of the Paleozoic Era, characterized by the appearance of primitive fishes.
奧陶紀（系）的屬於、有關或指奧陶紀（系）的，奧陶紀（系）是指古生代第二紀的一段地質時間、巖石系統及沉積物，該紀以早期魚的出現爲特征

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