You can't spend all your life chasing shadows.

你不能一辈子追求虚无缥缈的东西。

《牛津词典》

Instead, he traipsed around the world, chasing shadows.

相反，他却在世界上长途跋涉，追逐着影子。

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Samuel Eto 'o had Milan's defenders chasing shadows and the striker earned the penalty from which Diego Milito added Inter's second.

塞缪尔·埃托奥把米兰后卫甩得只有追影子的份儿，这位前锋赢得点球，迭戈·米利托打入了国米的第二球。

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They took the lead through an early Barkley penalty and their superb off-loading game soon had Saracens chasing shadows.

BBC: Bath 66-21 Saracens

Not that United's backline needed to be at its strongest, with Pompey chasing shadows for much of the game as Nani, Antonio Valencia and Rooney ran riot.

BBC: Man Utd 5-0 Portsmouth

Nuno Gomes and Conceicao went close for Portugal, while the Scots were reduced to chasing shadows for long spells and didn't threaten a goal until a Christian Dailly header drifted narrowly wide in the 90th minute.

BBC: Scots sink in Portugal