兩億年的英文

重點詞匯

兩億年───200 million years

雙語使用場景

South America and Africa separated 200 million years ago.───南美洲和非洲于2億年前分離。

South America separated from Africa 200 million years ago.───年前南美洲和非洲分離。

It is said that dinosaurs were living in 200 million years ago.───據說恐龍是生存在200萬年前。

Gigantism has been a common feature of land animals since the beginning of the Jurassic period, more than 200 million years ago.───自兩億多年前的侏儸紀之初，體型巨大就是陸生動物的普遍特點。

In the Y, which originally had the same set of genes as the X, most of the X-related genes have disappeared over the last 200 million years.───Y染色體起初原本擁有一套與X染色體相同的基因，但它們在2億年的進化長河中消失殆盡。

Only a few scattered and fragmentary fossils older than two million years have been argued to belong to the genus.───只有一些分散的、支離破碎的化石有超過200萬年的歷史，它們被認為是人類的化石。

英語使用場景

Pangea existed between 550 and 200 million years ago--which is relatively recent in geological time.

South America separated from Africa 200 million years ago.

They have been around, practically unchanged, for at least 200 million years.

South America and Africa separated 200 million years ago.

We may therefore take 200 million years as some sort of an upper limit to the age of an ocean basin.