underpinnings

US

UK

B2 中高級
n. pl.名詞 (複數)基礎
The philosophical underpinnings of educational methods are still evident

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核災難後野生動物的遭遇 (What Happens to Wildlife After Nuclear Disaster)

20:51核災難後野生動物的遭遇 (What Happens to Wildlife After Nuclear Disaster)