Mainly in charge of export business.

主要负责以上产品出口。

youdao

I'm mainly in charge of bamboo and wooden products.

我主要负责竹木方面的产品。

youdao

Be mainly in charge of the construction works of the hotel at first.

最初主要负责宾馆的筹建工作。

youdao

The reason why the Army ended up in charge of strategic defenses (to use Cold War military parlance) was mainly bureaucratic.

FORBES: Missile Defense Becomes A Navy Mission

It seems that everyone (well, mainly AppleInsider) is a-flutter over their recent hiring of Julia Miller, who was in charge of marketing for Microsoft's Xbox Live service and who has tons of experience with monthly subscription services.

ENGADGET: Apple planning subscription version of iTunes? Depends on how badly do you want to believe��