单词	abstruse
释义	abstruseab‧struse /əbˈstruːs, æb-/ adjective formal Word Origin WORD ORIGINabstruse Origin: 1500-1600 Latin past participle of abstrudere ‘to hide’, from abs- ‘away’ + trudere ‘to push’ unnecessarily complicated and difficult to understand:  Maths is a mix of abstruse theory and detailed calculations.
随便看	summons sumo sumo wrestler sump sumptuous sumptuously sumptuousness sum total Sun. sun sun-baked sunbathe sunbeam sunbed Sunbelt sunblock sunburn sunburned sun cream sundae Sunday Sunday best Sunday driver Sunday Express, The Sunday joint

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