GRE写作必背单词和短语（8）

　　36. unprecedented adj.空前的，史无前例的

　　e.g.the society is changing at a speed which is quite unprecedented.
 

　　37. inexorable adj. 不可阻挡的；坚持不懈的；无情的

　　e.g.Facts are inexorable || the inexorable march of science
 

　　38. Science is on the march. || the march of science/events/time
 

　　39. make great effort 努力； make every effort 尽一切努力；

　　overcome a myriad of political impediments克服政治障碍
 

　　40. a myriad of 无数，数不清

　　e.g.Each galaxy contains a myriad of stars.

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