| 单词 | vital source |
| 释义 | vital source The port and its lucrative charcoal industry were a vital source of income. Times, Sunday Times Tourism revenue, a vital source of income, has plunged by 2.4 billion. Times, Sunday Times This means that 'wake-up pack', literature sent by insurers to their customers six months before their retirement dates, are a vital source of information. Times, Sunday Times That would deprive thousands of independent acts of a vital source of income. Times, Sunday Times They fear that a vital source of revenue could be seized from under them. Times, Sunday Times |
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