... a well of information. 信息源泉 be well up in something 精通；熟悉 be well on the way to something/doing something 即将达到；将要成就 ...
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be well up in something
精通某事
以上为机器翻译结果，长、整句建议使用 人工翻译 。
If a young girl is dressed up well beyond her years and appears to be in an odd situation, for instance, say something to your tour guide, hotel or travel company, or call the appropriate authorities.
BBC: The darker side of tourism
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