但外部的军事观察家并不确切的知道，从何时中国开始决定提升他在这方面的精确能力。

No outside observer knows for sure when China decided to improve its capabilities in this particular field.

youdao

但外部的军事观察家并不确切的知道，从何时中国开始决定提升他在这方面的精确能力。

No outside observer knows for sure when China decided to improve its capabilities in this particular field.

youdao