According to the scientists who found its dead body, all that remainedof the polar bear was "skin and bones".
请问remain of是否理解成从...遗留？of在这里如何理解？remain of是固定搭配吗？
remain of 不是固定搭配，这里 of…本来是应该放在 all 后面的，但因为 all后面跟有定语从句 that remained，所以被隔开了。即：
allthat remained of the polar bear
= allthat remained+ all of the polar bear
