The chevron or arrow road sign indicates a sharp bend to the left or right.

V形或箭头交通标志表示左方或右方有急转弯。

《柯林斯英汉双解大词典》

The eyes on the picture of a real bill are sharp and clear; so there's another sign to watch for.

真钞票图案上的眼睛锐利清晰，因而这是另一个辨别真伪的特征。

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So whether the sharp sound of the bagpipes thrills you or not, there is no sign that the popularity of this strange and ancient instrument is fading.

所以，不管风笛清脆嘹亮的乐音是否撩你心弦，这种奇特又古老的乐器没有任何衰落的迹象。

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The disquiet that was expressed by IMF Managing Director Horst Kohler about the euro, followed later in the week by co-ordinated action to prop up the currency, was a sign of the worries shared now by all countries - about the possible consequences of sharp changes in exchange rates for world growth.

BBC: The Lessons of Prague

In another promising sign for the Democrats, there was a sharp increase in participation by many Latino voters in the party's 2008 primary elections.

BBC: Vote USA 2008 issues: Immigration

PDVSA, Venezuela's state-run oil company, announced a sharp fall in 2006 profits on Tuesday, perhaps a sign that a lack of investment in the industry may be eroding the country's productive capacity.

ECONOMIST: Tension over Iran is helping to push up oil prices once more