1. 维护：一个IndexWriter对象创建并且维护(maintains) 一条索引.它的构造函数(constructor)的create参数(argument)确定(determines)是否一条新的索引将被创建,或者是否一条已经存在的索引将被打开.
1. maintains的意思
1. Tibet appears to be surreal and a new world to him and maintains a rare, valuable sense of purity despite the bustling commercial development in some places.
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2. The commission estimates that males may outnumber females by up to 40 million by the year 2020 if the birth ratio maintains its current trend.
3. The 10 hectares of natural camphora wood forest maintains its original form, with most trees being over 60 years old.
4. Since China still maintains capital account controls, it would be extremely difficult for the US to source renminbi in international currency markets.
5. Hong Kong maintains its capitalist system and exercises a high degree of autonomy pursuant to the Basic Law.
6. maintains
6. Dow maintains the legal case was resolved in 1989, when Union Carbide settled with the Indian government for US $ 470 million.
7. The Obama administration maintains that revenue from auctioning off carbon emission allowances would offset much of the higher energy costs for many Americans.
8. maintains
8. The lounge area maintains this vibe, with chunky sofas set for causal discussions and art lectures.
9. The palace in central Tokyo maintains a rice field within its grounds and the emperor takes part in a ritual planting ceremony each spring.
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10. It too still maintains many elements of the Soviet central planning and investment system.