| 单词 | core |
| 例句 | core noun 1.•the earth's core:center, interior, middle, nucleus | recesses, bowels, depths | informal innards | literary midst. 2.•the core of the argument:heart, heart of the matter, nucleus, nub, kernel, marrow, meat, essence, quintessence, crux, gist, pith, substance, basis, fundamentals | informal nitty-gritty, brass tacks, nuts and bolts.▶adjective •the core issue:central, key, basic, fundamental, principal, primary, main, chief, crucial, vital, essential | informal number-one. ANT peripheral. |
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