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1.spin v.快速旋转(to revolve rapidly)
2.spinach n.菠菜
例：Kale has more nutritional value than spinach.
3.spine n.脊柱(spinal column, backbone)；（动植物身上的）刺(any of the sharp needle-like parts on some plants and animals)
词根记忆：spin（刺）+e--刺
例：Many plant species have sharp spines on their stems to protect themselves from browsing mammals.
派生词：spinal(a．脊柱的)；spiny(a多刺的)
4.spiral a．螺旋形的(helical)；v．盘旋上升（或下降）(to go and especially to rise or fall in a spiral course);n．螺旋(something having a spiral form)
词根记忆：来自spire(n.螺旋)
例：spiral galaxies旋涡星系 //spiraling costs螺旋式上升的费用 //The caterer cut the radishes into decorative spirals.
5.spiteful a．怀恨的，恶意的(malicious)
例：The spiteful girl told lies about her teachers.
6.splinter n.碎片(sliver)
例：Be careful! There are splinters of glass all over the floor.
7.split v．分裂，裂开(to divide into parts or portions)
发音记忆：“死劈了它”--劈开--分裂
例：In the late seventh century, in a dispute over whether the Prophet Muhammad's son-in-law, Ali, should carry on as the fourth caliph, Muhammad's successor, Islam split into two branches, the Sunnis and the Shiites.
8.splotchy a．有污点的，污渍斑斑的（spotty）
例：the splotchy surface斑驳的表面
