river河，不要 r 就裂开rive,
加上ar–arrive到达，
再改e为al–arrival成名词
rive
美 [raɪv]
n.
裂开;碎片
v.
撕开;拧去 (from; away; off);使烦恼;分裂
【前面我们见过rove漫游;流浪;漂泊;(眼睛)转来转去（prove证明， approve赞成、批准）
rove中间的O改成i，成rive，
和river相比就少了个r，所以看你对哪个词更熟悉，就与哪个词关联到一起。
我更喜欢与river关联到一起，因为河会被分成几个河道，被大山撕开】
The party was riven with factional fight.
因为派系争斗，党被四分五裂
river
美 [ˈrɪvər]
n.
河;江;(液体)涌流
Here the river is confined in a narrow channel.
河水在这里注入狭窄的河床。
arrive
美 [əˈraɪv]
vi.
到达;抵达;送达;寄到;发生;到来
【rive分裂，arrive分裂到来】
We will wait until they arrive.
arrival
美 [əˈraɪvl]
n.
到达;抵达;到达者;抵达物;(新技术、新思想的)引进，采用，推行
We‘re expecting a new arrival in the family soon.
家里很快有一个新成员。
【reading】predict future
"Do you want it in writing?"Cleon was sarcastic.
"你要我写下来吗？"Cleon嘲讽道
"Your spoken word of honor will be sufficient," said Seldon, his heart sinking, for he was not certain it would be.
“您口头承诺就足够了。”Seldon回道，他的心一沉，他不确定这会有用。
"You have my word of honor."
“我以我的名誉向你保证。”
"Then I can tell you that in the past four centuries nearly half the Emperors have been assassinated, from which I conclude that the chances of your assassination are roughly one in two."
“我可以告诉你的是，在过去 4个世纪里，近半数的皇上被刺杀，由此我认为，你被刺杀的机会是1/2。”
"Any fool can give that answer," said Cleon with contempt."It takes no mathmatician."
“任何一个蠢 货都能给出这个答案，”Cleon轻蔑地说。“根本不需要数学”
sarcastic美 [sɑːrˈkæstɪk]
adj.
讽刺的;嘲讽的;挖苦的
【sarc傻astic的，说人家傻得没边了，不无嘲讽
sar傻+case案例（注意去e）+tic】
Three-eyeed monster growled a sarcastic reply.
sufficient
美 [səˈfɪʃnt]
adj.
足够的;充足的
【suffice美 [səˈfaɪs]
vi.
足够;足以
suf 下 + fic 做，制作 + e → 在下面提前做好 → 使满足
suffer for face就一辈子的事了，这样总是足够–>suffice
suffer 美 [ˈsʌfər]
v.
(因疾病、痛苦、悲伤等)受苦，受难，受折磨;遭受;蒙受;变差;变糟】
She was a beauiful girl. Jan was jealousy and scratched her face, she want her to suffer a great pain.
Sufficient research evidence exists to support the contention.
有足够的调查证据支持这个观点。
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