We felt a need for an up-to-date and concise book in this field.

我们感到在本学科领域内需要一本最新的简明扼要的书。

youdao

We felt a need for an up-to-date and concise book in this field.

我们感到在本学科领域内需要一本最新的简明扼要的书。

youdao