每个从网络到数据库服务器的往返行程从性能角度来看是昂贵的。
Each network round trip to the database server is expensive in terms of performance.
在一个往返行程之后，波浪加强了其自身的力量。
大多数60英里以上行程的周末往返票仍然有售。
Weekend returns are available for most journeys over 60 miles.
我学校会支付我去美国往返行程的费用。
还可以减少应用程序和数据库之间的潜在往返行程次数。
It also reduces the potential number of round trips between an application and the database.
还可以减少应用程序和数据库之间的潜在往返行程次数。
It also reduces the potential number of round trips between an application and the database.
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