例句與造句

1. There is a strong emphasis on conserving resources which is exemplified by Symbian-specific programming idioms like descriptors and a cleanup stack.
2. Unfortunately, Symbian C + + programming has a steep learning curve, as Symbian C + + requires the use of special techniques such as descriptors, active objects and the cleanup stack.
3. It's difficult to find cleanup stack in a sentence. 用cleanup stack造句挺難的