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单词 tree fern
例句
原声例句
万物简史

Horsetails and tree ferns grew to heights of fifty feet, club mosses to a hundred and thirty.

杉叶藻和桫椤长到l5米的高度,石松长到40米的高度。

自然百科

There was this picture of venus as a kind of primitive, steamy earth complete with giant tree ferns and dinosaurs.

金星上有一种原始、巨树蕨类和恐龙,及非常热的地球的感觉。

经济学人-文艺

Invaders such as purple-flowered Asian melastome and strawberry guava threaten to overrun delicate Hawaiian natives such as thornless roses and delicate tree ferns.

包括亚洲紫色野牡丹和草莓番石榴在内的外来物种肆意繁殖,威胁了脆弱的本地物种,如无刺玫瑰和树厥的生长。

PBS地球-动物趣闻

This period is named after the carbon-rich layers of sediment that formed from countless millions of scale trees, ferns, and other early plants that died, piled up, and fossilized.

这一时期以富含碳的沉积层命名,这些沉积层由数以百万计的鳞片树、蕨类植物和其他死亡、堆积和化石化的早期植物形成。

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