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- Secondary roots emerge on the 4th or 5th day about 4 or 5 cm from the root apex. 在第四或第五天，距根端大约4或5厘米处发出次生根。
- The microstructure of primary root and different secondary roots were studied by hand sectioning and routine mineral wax moviemaking. 结果显示：与不耐旱品种玉米的根系相比，耐早玉米的初生胚根的皮层细胞层数较少，木质部导管数量较多、导管直径较小；
- The results showed that : The number of secondary roots、the dry weight、the absorbent surface total area and activ absorption area 、activity of TTC was different in various degrees of water deficit. 结果表明：水分胁迫显著影响水稻单株次生根数、根系干重、根系吸收总面积、活跃吸收面积和根系活力；
- Different consistency phytohormone was applied to the seedling roots of three Fagaceae species distributed in Ningbo area,then the number and incresment of secondary roots were measured and analyzed. 选择宁波地区分布的3种壳斗科树种1年生幼苗,通过不同浓度生长调节剂根施处理,测定并分析了幼苗侧根的数量及其生长量。
- a large number of secondary roots 大量次生根
- branch roots from the secondary roots 从次生根发生的侧根
- Some plants push their roots deep into the soil. 一些植物的根深深长入土中。
- 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。
- Her age is of secondary interest. 她的年龄不太重要。
- Many Americans have roots in Europe. 许多美国人祖籍在欧洲。
- Secondary roots emerge on the 4th or 5th day about 4 or 5 cm from the root apex 在第四或第五天，距根端大约4或5厘米处发出次生根。
- The dog was snuffling around the roots of a tree. 那条狗在树根处嗅来嗅去。
- 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。
- In secondary school, children get more advanced knowledge. 在中学，孩子获得更深一些的知识。
- The fishline became enmeshed in roots under the water. 钓鱼线给水下的草木根缠住了。
- A secondary matter; a side issue. 次要的第二位的事; 较次要的问题
