Germany was also Italy's sole source of oil.

德国也是意大利唯一的石油来源。

youdao

For most people, their job is their sole source of income.

对大多数人来说，工作是唯一的收入来源。

youdao

Of course, Alaska is not the sole source of American energy.

当然，阿拉斯加不是美国的唯一能源产地。

youdao

They have been, after the government, the sole source of job creation in the region.

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For 42% of single women older than 62, Social Security is their sole source of income.

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