The troops at the front sent back for reinforcements.
前线的军队向后方要求增援。
The general assessed the situation and called for reinforcement.
这位将军估计了形势并要求增援。
an appeal for help, food, extra staff
恳求援助、 食物、 增添职员
a begging letter,ie one that asks for help,esp money
求援信（尤指要求金钱资助的）
You can always turn to me when the chips are down.
到了紧要关头你可以向我求援。
Susan is always crying wolf when the slightest thing goes wrong.
只要出一点差错，苏珊就会到处求援。
Many more will die unless there is an increase in foreign aid.
要是不增加外国援助，更多人就会死亡。
The general reinforced the fort with more troops.
将军派更多的军队增援要塞。
Help/Emergency: Assist the signaler as quickly as possible.
求救/紧急情况：救援求救人要尽可能迅速。
The former russian satellite now turn to the west for help
从前俄国的卫星国现在转向西方要求援助
fire delivered on a specific target in response to a request from the supported unit.
回应被支援部队的要求打击特殊目标的射击。
Of the Central Government in Nanking we demand the following: Give effective aid to the 29th Army.
我们要求南京中央政府切实援助第二十九军。
The former Russian satellites now turn to the West for help.
从前俄国的卫星国现在转向西方要求援助。
When necessary, the master should request shore assistance to enter into oil / NLS spill response.
必要时，船长应请求岸上援助队进入漏泄现场。
They are striking for higher pay.
他们罢工要求增加工资。
The help are demanding higher wages.
雇工们要求增加工钱。
The railroad workers have asked for a wage increase.
铁路工人要求增加工资。
The minister cited the latest crime figures as proof of the need for more police.
部长援引最新犯罪数据以证明有必要增添警察。