它们为闯向AspectJ这座红灯之前的实验和学习提供了一个缓和的练习坡地，而且也依靠它们自己能力提供了一个高生产率的工作环境。
They can provide either a gentle nursery slope for experimentation and learning, prior to the red runs of AspectJ, or a highly productive work environment in their own right.
本发明公开光学电子靶涉及玩具产品，它安全有趣，适合初学射击者练习，训练击准率。
The invention discloses an optical electronic target, which relates to a toy product, is safe and interesting and is suitable for beginners to practice shooting and training hit rate.
减少练习的错误率，提高教学效率；
In addition, errors in practice could be reduced as teaching efficiency improved;
减少练习的错误率，提高教学效率；
In addition, errors in practice could be reduced as teaching efficiency improved;
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