This article develops the first language learning system of German-Chinese/Chinese-German in Taiwan. With this system the students can find the respective foreign language expressions by their own native language (e.g. Chinese sentences with the help of the German or German sentences with the help of the Chinese one). In contrast to the dictionary, which works on the word level, the current system works on the sentence level. In addition, the system offers correct sentences which the students can use in communication. The students do not need to spend time on checking the correctness of the sentences. This system offers the foreign language sentences to the students, so that they can communicate their ideas in the foreign language conveniently.