Which scientist discovered that objects in water are lifted up by a force that helps them float这句话中的两个 that 的含义和区别

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Which scientist discovered that objects in water are lifted up by a force that helps them float这句话中的两个 that 的含义和区别
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Which scientist discovered that objects in water are lifted up by a force that helps them float这句话中的两个 that 的含义和区别
Which scientist discovered that objects in water are lifted up by a force that helps them float
这句话中的两个 that 的含义和区别

Which scientist discovered that objects in water are lifted up by a force that helps them float这句话中的两个 that 的含义和区别
语法上,第一个是宾语从句的关联词,第二个是定语从句中的关联词.
意义上,第一个无实义,就是分开主句和宾语从句,表示“discover”的内容.第二个that引导的定语从句修饰"a force",相当于“the force”.

谁发明了浮力？
Archimedes(阿基米德)

which scientist proposes that Day Star could not detect which operating system is in this disc image.you will need to fabs(disc) compact disc compact disc checking disc adhere disc 摄像机disc MY DISC DISC是什么 什么是disc? DISC是什么 center disc u-disc which scientist proposes Day star哪个科学家发现了启明星快 The stories of the famous scientist,___this is one example,are well writen.which ,为什么不用 about which? the scientist “scientist”是什么意思?