风往哪个方向吹?从你的前门可以看到多少种野花?如果你感觉足够敏锐，你就能毫不费力地回答这些问题。
Which way is the wind blowing? How many kinds of wildflowers can be seen from your front door? If your awareness is as sharp as it could be, you'll have no trouble answering these questions.
当被问及有关问题时，盖茨对于微软和谷歌在网络搜索方面有一些敏锐又尖刻的意见。
Gates had a few observations on the Internet search efforts of Microsoft and Google that were, by turns, acute, sardonic and tart.
林肯敏锐地意识到他必需澄清这个问题。
Lincoln was keenly aware that he needed to clarify the issue.
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