There were no signs of a struggle at the murder scene.

在谋杀现场没有搏斗痕迹。

《牛津词典》

They injected him with a muscle relaxant, suffocated him and then smoothed away any signs of struggle, reattaching the hotel door chain as they left the room, investigators say.

据调查者称：凶手向被害人注射肌肉松弛剂，使之窒息致死，然后销毁任何争斗的痕迹，重新关上房门并离开了房间。

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But if a struggle is brewing, signs of it are hard to spot.

然而，即便斗争正在酝酿，其迹象却难以察觉。

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Some people who track the latest news out of Iran say they see signs of a power struggle.

NPR: Iran's New President Stirs Political Turmoil

But if a struggle is brewing, signs of it are hard to spot.

ECONOMIST: The politics of repression in China

Inevitably, the hints of a looming leadership struggle had observers looking for signs that Mr Costello had decided to pitch the budget at voters as much as the market.

ECONOMIST: But more rigour is needed