参考例句

1. A low-growing, weedy grass(Paspalum distichum) with spikelets arranged in two rows along the rachis .

   两耳草一种小穗沿叶轴排成两行的低矮蔓生草（两耳草雀稗属）

2. Likewise, a plumulaceous tuft of barbs evolved before the pennaceous feather with a rachis because the rachis is formed by the fusion of barb ridges.

   同样的，绒羽的羽枝簇比拥有羽轴的正羽更早演化出来，因为羽轴是由羽枝脊接合而成。

3. Spadix rachis flat, margin with bract-like appendages; flowers small, monoecious, in 2 series on rachis , apetalous.

   肉穗花序轴扁平，边缘有苞片状附属物；花小，单性，雌雄同株，呈2列排列于花序轴上，无花被。

4. hair development and rachis of spikelet

   小穗轴生毛

5. Inflorescence paniculate, rachis tawny tomentose; female flowers borne on basal part of the inflorescence.

   花序圆锥状；花序轴被灰黄色短绵毛；雌花著生于花序轴下部。

6. A low - growing,weedy grass(Paspalum distichum)with spikelets arranged in two rows along the rachis .

   两耳草一种小穗沿叶轴排成两行的低矮蔓生草(两耳草雀稗属)

7. Leaves bipinnate,10-25 cm long, usually with2 pairs of pinnae, rachis often ending in a tendril; pinnae with2-4 pairs of leaflets and terminal tendrils; leaflets opposite, oblong or long obovate,3-9 cm long,1.5-4 cm wide, apex obtuse or emarginated, base slightly oblique.

   叶为二回羽状复叶，长10-25厘米，叶轴先端常变为卷须，羽片通常2对，顶生1对羽片变为卷须；小叶2-4对，对生，长椭圆形或长倒卵形，长3-9厘米，宽1.5-4厘米，先端钝、凹，基部略偏斜。

8. rachis internode

   穗轴节间

9. Leaves bipinnate, 10-25 cm long, usually with 2 pairs of pinnae, rachis often ending in a tendril; pinnae with 2-4pairs of leaflets and terminal tendrils; leaflets opposite, oblong or long obovate, 3-9cm long, 1.5-4cm wide, apex obtuse or emarginated, base slightly oblique.

   叶为二回羽状复叶，长10-25厘米，叶轴先端常变为卷须，羽片通常2对，顶生1对羽片变为卷须；小叶2-4对，对生，长椭圆形或长倒卵形，长3-9厘米，宽1.5-4厘米，先端钝、微凹，基部略偏斜。