They are located in tissues ( the apical meristems ) at the growing points of roots and stems.它们位于根和茎的生长点组织 ( 顶端分生组织 ) 中....the twisted roots of an apple tree.苹果树盘绕的根The fishline became enmeshed in roots under the water....
Lean the plants against a wall and cover the roots with peat.把植物靠墙摆放，用泥煤盖住根部。The tree's roots are stripped and hung to season and bleach.树根剥皮后挂起来风干晒白。Firm more soil over the roots and water thoroughly.在根上再多培些土，用水浇透。...
提高厌氧消化速度是工业化生产沼气的核心所在.The improvement reaction efficiency is the key to methane's production on industrializationscale. "一些新能源(例如沼气)的使用,正在农村地区增加.Use of new energies such as marsh gas is increasing in the rural areas...