如果您在搜索的节点不是顶级节点(或片段根)，那么您必须小心。
You have to be careful if the nodes you're searching are not top-level nodes (or fragment roots).
迈克尔。卡里克和保罗。斯科尔斯都不是顶级的防守者。
Michael Carrick and Paul Scholes are hardly the greatest tacklers.
这杯红酒也许不是顶级佳酿，但有了这杯酒，女人确实是更美了。
Maybe the wine is not among the greatest vintages, but woman with the wine is more beautiful, exactly.
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