n. 【植物；植物学】 1.小羽片。 2.(棘皮动物的)羽枝。 3.【动物；动物学】小鳍。 短语和例子 -nulate , -nulated adj.
Example Sentences:
1.
Sori borne along the longitudinal veins and protected by the reflexed edges of the ultimate segments of pinnules 孢子囊沿能育叶裂片的纵脉两侧著生，并为裂片反卷的边缘所覆盖。
2.
Leaves crowded near apex of the trunk , spirally arranged ; stipes dark brown , with sharp spines ; lamina large , oblong , tripinnate ; pinnae 17 - 20 pairs , alternate , longest one to 60 cm long , the basal one reduced ; rachis short - spiny ; pinnules 18 - 20 pairs , sessile or nearly so , lanceolate , to 10 cm long and 2 . 5 cm wide , divided almost to the costa ; segments more or less falcate , toothed 叶螺旋状排列，聚生于茎端；叶柄棕色，具锐刺；叶片大，长矩圆形，三回羽状深裂；羽片17 - 20对，互生，最大的长达60厘米，基部一对缩短，羽轴有短刺；小羽片18 - 20对，无柄或近于无柄，披针形，长达10厘米，宽2 . 5厘米，深裂几达中脉；末回裂片多少镰状，有齿。
3.
Leaves tufted ; stipes stout , up to 1 . 2 m long , densely covered with golden brown hairs at base ; lamina up to 2 m long and 1 m wide , tripinnatifid ; pinnae alternate , sparsely spaced ; pinnules linear - lanceolate , to 15 cm long and 1 - 2 . 5 cm wide , short - stipitate ; ultimate lobes linear , more or less falcate , shallowly serrate , dark green and shining above , light green to glaucous below 叶簇生；叶柄粗壮，长可达1 . 2米，基部亦密被金黄褐色毛；叶片长可达2米，宽达1米，三回羽状分裂；羽片互生，疏离；小羽片线状披针形，长达15厘米，宽1 - 2 . 5厘米，具短柄；末回裂片线形，略呈镰状，边缘有浅锯齿，上面深绿色，有光泽，下面灰白色。
