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Vuitton, for instance, would doubtless like to see disposals of weaker brands as a result of the crisis, and a greater concentration of resources on the group's key businesses.

举个例子，毫无疑问，VUITTON期待这场危机能淘汰掉一些薄弱的品牌，让资源能更集中在集团的核心业务上。

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Know concentration is key.

要明白，专注是最重要的。

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He said that "concentration and focus" were the key to good driving on and off the track.

BBC: Stig urging drivers to take soft option

Climate sensitivity is a key parameter for estimating the long-term temperature increase expected from a doubling of the concentration of greenhouse gas emissions in the atmosphere.

FORBES: Climate Sins and the High Priests of Peer Review