He sees signs that the surge of troops, mainly to Baghdad, is working.

他注意到有迹象表明，增兵的作用，尤其在巴格达，正在突显。

youdao

Despite a string of attacks early Sunday,mainly in Baghdad, insurgents were not able to carry out the massive strikes they had threatened.

VOA: standard.2010.03.08

One is the American surge of an extra 28, 000 troops, mainly into Baghdad, bringing the overall number to around 160, 000.

ECONOMIST: Iraq