But because of the large quantity of targets , complex cooperation relations and frequent tactical movements in modern wars, it is very difficult to set up a perfect model of situation assessment.

但现代战争涉及到的作战对象多、协同关系复杂、战术机动频繁，建立一个完善的态势估计模型存在很多困难。

youdao

Currently the international situation is undergoing profound and complex changes and seeking peace, development and cooperation is common voice of our times.

当前，国际形势正发生深刻复杂变化，求和平、谋发展、促合作是我们时代的共同呼声。

youdao

The regional and international situation at present is undergoing profound and complex changes, presenting new challenges and opportunities for our friendly cooperation.

当前，国际地区形势经历深刻复杂变化，中巴友好与合作也面临新的机遇和挑战。

youdao

The Kaesong complex is an experiment in North-South cooperation which opened for business in 2004 just inside North Korea's border with the South.

VOA: standard.2009.06.05

In actuality, businesses and entrepreneurs create incomprehensible, complex webs of cooperation that are all geared toward improving our lives.

FORBES: Pressuring Business to Believe in Business

The obvious challenge: getting cooperation from a complex field of large players.

FORBES: Connected Cars: Moving Into The Fast Lane

And first of all, I'd like to thank my colleague, President of the United States of America, for the successful cooperation in this very complex matter, and for the reasonable compromises that have been achieved, thanks to the work of our two teams -- we have already thanked them, but let me do it once again in the presence of the media and the public.

WHITEHOUSE: Signing of New START Nuclear Arms Treaty with Russia