协办的英文：
assist
help somebody do something
cooperate in doing something

参考例句：

They went off arm in arm.
我们在工作中同心协办，相互配合。

The TV festival will be sponsored by China central television and assisted by some local television stations
本届电视节将由中国中央电视台主办，若干地方电视台协办

The Gourmet Week is hosted by SAS Hotel and co-sponsored by the Chinese embassy in latvia
美食周由萨斯饭店主办，中国驻拉脱维亚大使馆协办。

assist是什么意思：
n. 援助，帮助
v. 援助，帮助；出席，到场参加

assistant starter
助理发令员

The shop assistant has undercharged us.
售货员向我们要价很低。

Assistance for the reconstruction and development of Lebanon
为黎巴嫩的重建和发展提供援助

help是什么意思：
v. 帮助；促进；搀扶；擅自拿走；有用；救命
n. 帮助；有帮助的人或物；有用；救助；仆人

It helps not to cram.
这无助于死记硬背。

Heaven helps those who help themselves.
上帝保佑那些自我帮助的人。

These not only help in presentation but also help orient users.
这不仅有助于表达，而且可以帮助使用者在创建时更好地定位。

somebody是什么意思：
pron. 某人，有人
n. 重要人物

to sit for somebody
为某人做临时保姆

fall to somebody by assignment or lot.
通过分配或者划分使某人垮台。

He is somebody in this city.
他在这个城市是个重要人物。