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.

youdao

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.

youdao