她对德语和俄语有足够的实用知识。

She has ___a ___working ___knowledge ___of German and Russian.

此外，我对英语、西班牙语、加泰罗尼亚语和意大利语有足够的实用知识。

Furthermore, I have ___a ___working ___knowledge ___of English, Spanish, Catalan and Italian.

他工作需要足够的计算机编程实用知识。

He needs ___a ___working ___knowledge ___of computer programming for his job.