Collective defense always assumed that America would come to Europe's aid against a superpower like the Soviet Union.

集体防御总是假定美国将会给欧洲支援，来对抗一个超级大国，像苏联。

youdao

Troops have been sent to protect aid workers against attack.

已经派出部队保护援助工作人员免遭袭击。

《牛津词典》

Officials declined to borrow against next year's state aid, they refused to trim extracurricular activities and they did not consider seeking a smaller—perhaps more acceptable—tax increase.

官员们拒绝借用下一年度的国家补助金，拒绝削减课外活动，也没有考虑寻求一个更低的（也许是更易接受的）税收增长。

youdao

Watkins says there also has been an increase in the number and gravity of attacks against international aid organizations.

VOA: standard.2009.08.07

The government also harshly criticized correspondents, international organizations and aid workers who it perceived of having a bias against it and sympathy for the rebels.

VOA: standard.2009.09.06

Fedenaga announced that it was setting up a fund for mutual aid against land invasions.

ECONOMIST: Venezuela

The below chart plots the growth in total federal and state student aid against the change in one measure of college affordability: the ratio of real average FTE enrollment-weighted tuition to real median family income.

FORBES: Subsidy-Absorbing Institutions of Higher Education

But any attempt to swing the balance from humanitarian aid to development aid comes against the imperative of saving the starving today.

ECONOMIST: The Horn of Africa