知识必须与训练、实践经验和严格的安全原则相结合，才能发挥作用。

Knowledge must be linked with training, practical experience and strict adherence to safety.

youdao

知识必须与训练、实践经验和严格的安全原则相结合，才能发挥作用。

Knowledge must be linked with training, practical experience and strict adherence to safety.

youdao