American forces will concentrate on areas close to the Pakistani border, which are seen as the most troublesome.

美国将集中兵力打击最易出动乱的巴基斯坦边境。

youdao

So if the bacterial odor molecule is present, the CO2 sniffers turn off, presumably to allow the mosquito to concentrate on the close-range foot target.

因此，如果这个细菌的气味的分子出现的话，二氧化碳的探测则终止。这大概是为了让蚊子去专心于眼前的食物吧。

youdao

These developments have led the poultry industry and the associated feed industry to scale up rapidly, to concentrate themselves close to input sources or final markets, and to integrate vertically.

这些进展促使家禽业和相关的饲料产业迅速增长，与投入品源头或终端市场建立密切的联系，并实现垂直整合。

youdao

That is partly the healthy consequence of liberal economic reforms in the 1980s and 1990s: the previous policies of state-led import-substitution tended to concentrate economic activity close to the centres of political power.

ECONOMIST: Productivity in Latin America

My work required deep concentration and I am positive that I would have been a far more efficient worker had I had a small office with a door that I could close when I needed to concentrate.

BBC: The pleasures and perils of the open-plan office

The Chinese, therefore, can concentrate their boats in waters close to their shores, giving them tactical and operating advantages.

CENTERFORSECURITYPOLICY: Freedom Flame 2013