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- The seed ferns included treelike forms. 种子蕨类植物包括树状类型的植物。
- genus of fossil seed ferns of the Carboniferous. 石炭纪的一种化石种子蕨。
- fossil gymnospermous trees or climbing plants from the Devonian: seed ferns. 裸子植物化石树或攀缘植物，起源于泥盆纪；种子蕨。
- extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies. 生活于石炭纪至侏罗纪的大部分时间的现已灭绝的裸子植物；种子蕨及同源植物。
- The ground was covered with ferns. 地面上长满了羊齿植物。
- Ferns reproduce (themselves) by spores. 蕨类植物用孢子繁殖。
- The hillsides are covered with ferns. 山坡上长满了蕨类植物。
- An area overgrown with this fern. 欧洲蕨林被这种蕨覆盖的地带
- The chef sprinkle poppy seed on the cake. 厨师往蛋糕上撒罂粟籽。
- The trunk of a palm or tree fern. 棕榈树或树蕨的树干
- Part of every crop is saved for seed. 每一种庄稼都留一部分作种子。
- The farmers were scattering seed on the fields. 农夫把种子撒在田里。
- Bursting apart, as some seed pods when ripe. 爆裂的，如一些荚果成熟时
- Temperature is most important for seed germination. 温度对种子的发芽至关重要。
- The seed has a hard exterior covering. 这种子外壳很硬。
- It is seen in many ferns and in all seed plants.Compare exoscopic. 在多数蕨类植物和所有的种子植物中均可以看到。
- The seed of a fleshy fruit; a pip. 籽，种子肉质水果的种子; 籽
- it lived on prairies filled with ferns, bennettites and horsetails, and it moved through vast conifer forests and groves of cycads, seed ferns and ginkgos. 牠生活于充满蕨类、苏铁目及木贼属的草场，并穿越大量松科、苏铁科及银杏的树林。
- He started to drink too much and gradually ran to seed. 他喝酒过多，身体逐渐衰弱了。
- Do you know about the evolution of a seed into a plant? 你知道从种子发展成为植物的过程吗？
