英语短语词组词汇pin sth↔down的音标、释义、翻译、用法及例句-英语短语词组词典

短语	pin sth↔down
释义	ˌpin sth↔ˈdownto explain or understand sth exactly确切说明（或理解）The cause of the disease is difficult to pin down precisely.病因目前还难以解释清楚。
随便看	seouls Sep Sep. sepal -sepaled sepaled sepaline sepalled sepaloid -sepalous sepalous sepals separabilities separability separable separable extension separableness separable polynomial separable space separably separata separate separate but equal separated separated ammunition

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