谨防他，他是只披着羊皮的狼。
他们告诫他谨防危险。
但对于高速铁路他持悲观态度，表示收益未经证实，可能也太昂贵：大臣们要谨防被重大项目所诱惑。
He took a dim view of high-speed trains, saying that their benefits were unproven and they were likely to be too expensive: ministers should beware of being "seduced by grands projets".
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