But as the Silurian gave way to the Devonian, a dangerous new competitive pressure entered the seas — the armored, jawed fish known as the placoderms.
但随着志留纪让位给泥盆纪,一种危险的新竞争压力进入了海洋——被称为盾皮鱼的有甲有颚鱼。
单词 | dangerous pressure |
释义 |
dangerous pressure
原声例句
PBS地球-动物趣闻 But as the Silurian gave way to the Devonian, a dangerous new competitive pressure entered the seas — the armored, jawed fish known as the placoderms. 但随着志留纪让位给泥盆纪,一种危险的新竞争压力进入了海洋——被称为盾皮鱼的有甲有颚鱼。 |
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