Flower - heads narrowly campanulate , 16 - 19 mm long , ca . 6 mm across , usually 2 - 4 in terminal clusters ; peduncle 2 - 8 mm ; involucral bracts ca . in 7 series , ribbed on abaxial surface , apex spiny 叶互生，卵形，长3 - 5 . 5厘米，宽2 - 4厘米，先端短尖，基部近截形，边缘具疏齿，两面被长柔毛，具基出脉3条；叶柄长3 - 5毫米。
The spindles produced by this factory are applicable fro complete production or maintenance of various coarse - fine spinier , twisting machine , drawing pot reeling machine , silk winder , wrap silk machine etc 本公司生产的锭子适用于毛、麻、棉、绢丝、化纤、绲纺等各类精粗纺细纱机、捻线机、牵伸加捻机、络丝机、包覆丝机等配套生产或维修。
The cortical oscillators connect to the striatum via millions of signal - carrying arms , so the striatal spiny neurons can eavesdrop on all those haphazard “ conversations . ” then something ? a yellow traffic light , say ? gets the cortical cells ' attention 这些皮质振?器经由上百万个传送讯息的手臂与纹状体连接，使得纹状体的棘神经元可以偷听到所有这些随意的交谈。
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。
Diners in sushi restaurants are eating ever greater amounts of sea urchin roe , known as uni , creating a 23 million 13 million pounds industry in california for harvesting the creatures , the california sea urchin commission said this week . the spiny echinoderms , a potential peril to swimmers stepping on rocks , feast on kelp , which is dwindling along california ' s coastline 目前，美国人越来越爱吃日本寿司，而以海藻为食的海胆是日本寿司的主要原料之一，因此，人们发现多吃寿司非常有助于保护该国加利福尼亚州沿海地带正在日渐消失的海藻资源，海藻资源正是加利福尼亚地区生态系统的一个重要组成部分。
