Buffaloes have hard and sharp horns to protect themselves.

水牛用硬而锋利的角来保护自己。

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It was very black, with a grey neck; it had extraordinary eyes which were never still, and its beak was hard and sharp.

它非常黑，灰色的脖子；它的眼睛很特别，从来不会静止下来，它的嘴又硬又尖。

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A hard, poor childhood in north London had given him a nose for a deal and a sharp sense of the value of everything.

丹尼尔斯在伦敦北部度过了他贫穷艰苦的童年，这一段生活经历培养了他善于发现商机的天才和对一切事物价值的敏锐直觉。

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The PowerShares QQQ Trust ( QQQ) was also hit hard last week, and the sharp decline in Baidu.com ( BIDU) did not help.

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The collapse of the dotcom boom and the sharp downturn in computer and telecommunications markets hit them especially hard.

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But we will work hard when we can, and try and stay sharp ready for the games.

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