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- Cycadophyta (cycads) A phylum of cone-bearing gymnosperms (about 75 living species) with palmlike compound leaves and special CORALLOID ROOTS at or near the ground surface, which contain symbiotic nitrogen-fixing cyanobacteria. 苏铁纲（苏铁类植物）：包含球果的一类裸子植物（现存种大约有75种），它们具有掌状的复叶，在近地面处有特殊的珊瑚状的根，根内含有共生的固氮蓝细菌。
- Coralloid roots A type of root regularly produced by cycads, which contains symbiotic nitrogen-fixing cyanobacteria in root nodules, giving the roots a knobbly coral-like appearance. 珊瑚状的根：由苏铁类植物产生的一种类型的根，根瘤中含有共生的固氮蓝细菌，使根形成珊瑚状的有节的形状。
- Some plants push their roots deep into the soil. 一些植物的根深深长入土中。
- The Anatomical Observation about the Cell Layer with Blue-green Algae in the Coralloid Root of Cycads 苏铁类珊瑚根内藻胞层的解剖观察
- We must not forget about the grass roots. 我们绝不能忘记民众。
- It has its roots deep in the Middle Ages. 它起源于遥远的中世纪。
- Once I took a wife I should have to put down roots. 我一旦娶了老婆，就该过安定的生活了。
- Pull up these plants by the roots. 将这些植物连根拔起。
- Many Americans have roots in Europe. 许多美国人祖籍在欧洲。
- The dog was snuffling around the roots of a tree. 那条狗在树根处嗅来嗅去。
- coralloid roots 蓝细菌
- She has no real roots in this area. 她原籍不在这儿。
- It is vain to attempt to root out heresy by force. 试图用暴力消除异端邪说是徒劳的。
- The fishline became enmeshed in roots under the water. 钓鱼线给水下的草木根缠住了。
- The roots of woody plants grow deep. 木本植物的根茎长得很深。
- Roses graft well on brier roots. 玫瑰很适於接枝在石南根上。
- These plants have very deep roots. 这些植物的根长得很深。
- We dug up the tree by its roots. 我们将树连根挖起。
- Let's pull up these plants by the roots. 让我们把这些植物连根拔起。
- These people live from hand to mouth on berries and roots. 这些人靠浆果和根茎勉强度日。
