Over 300 worked-out examples and more than 800 problems provide valuable learning aids.

超过300个算出的例子和超过800个问题提供学习帮助的贵重的物品。

youdao

The huge need of learning aids promoted the market prosper, China joined WTO to bring new opportunity and the challenge for Chinese publication industry.

教辅图书的巨大需求促进了市场的繁荣，入世给中国图书行业带来了新的机遇和挑战。

youdao

To assist the Technical Manager in the preparation of learning aids, evaluation methods, and service training seminars for distributor repair and warranty centers or customers.

协助技术经理为分销商维修及质保中心或客户准备相应的学习支持，评估方法，服务培训讲座等；

youdao

So it really does open up a new world of learning, Warren says when it comes to HIV/AIDS, people must be ready to be surprised.

VOA: standard.2010.07.15

VTech dominates two niche markets: electronic learning aids for kids and high-frequency cordless telephones.

FORBES: The VTech phenomenon

All these things can be used as learning aids.

BBC: Keeping son in school was 'abuse'

The Dakar Conference will just be another talking shop if governments are allowed to give lame excuses about shortcomings in girls education, run-down schools, inadequate teaching-learning aids, poor teacher supply, and funding.

BBC: You are in: Talking Point