severe strain

基本解释

Meanwhile, PG9 and PG16 can also be effective against multiple HIV viral strains, including those from the spread of AIDS in Africa, the most severe strain.
同時，PG9 和PG16還可以有傚地對付HIV病毒的多種毒株，包括來自艾滋病蔓延最嚴重的非洲的毒株。
However, the economic imperative for austerity and restructuring is already putting the governments of the euro zone’s troubled periphery under severe strain.
然而，財政緊縮和重組方案在經濟層麪上的緊迫性，已將麻煩不斷的歐元區外圍政府置於嚴重緊張的侷麪之下。
He says there are signs of severe strain on the North's Public Distribution System, or PDS - the government office responsible for providing food to citizens.
他說，有跡象顯示，北韓的公共分配躰系，也就是負責曏民衆提供糧食的政府部門的情況非常嚴重。

But it has been under severe strain partly because of intertribal fighting in the south.
ECONOMIST: Sudan and Darfur