Chess programming, however, has not lost its usefulness.
然而，国际象棋程序并没有就此止步。
The challenge for companies is to figure out how to manage consumer technologies in a way that doesn\'t limit their usefulness but doesn\'t result in lost time and money.
面对消费用技术，公司面临的挑战是如何管理这些技术既保证其功效，又不会损失工作时间或金钱。
The present should never be chained to customs which have lost their usefulness.
绝不可用那些已经无用的习俗来束缚现在的手脚。
The present should never be chained to customs which have lost their usefulness.
绝不可用那些已经无用的习俗来束缚现在的手脚。
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