He cites the outbreak in the early 1970s of yellow dwarf virus, which threatened to wipe out the world's barley crop.

他以上世纪70年代初黄矮病毒爆发为例，当时的爆发威胁到全球大麦作物的生死存亡。

youdao

The damaged reefs were then covered by a single species of seaweed which threatened to suffocate the coral and cause further loss.

遭到破坏的珊瑚礁被单一种类的海藻所覆盖，以致于珊瑚窒息，进而造成破坏。

youdao

Alexander defeated the Persian Army, which at that time controlled all of Asia Minor, Modern Turkey, and had even threatened to control Greece.

亚历山大打败了波斯军队，波斯军队当时控制了整个小亚细亚，也就是今土耳其，甚至威胁要控制希腊。

youdao

The Palestinians have threatened to cancel indirect negotiations, which they agreed to only a few days ago.

VOA: standard.2010.03.11

Alexander defeated the Persian Army, which at that time controlled all of Asia Minor, Modern Turkey, and had even threatened to control Greece.

亚历山大大败波斯军队，波斯人当时控制了整个小亚细亚，现代土耳其，甚至扬言要占领希腊。

耶鲁公开课 - 新约课程节选

Turkey,which hoped to join the European Union, threatened in January to block Nabucco, citing a lack of progress in its talks on EU accession, but on Thursday it voiced full support to the project.

VOA: standard.2009.05.08

Food sales were up by 1%, despite the horsemeat scandal which threatened to affect the big supermarkets.

BBC: UK retail sales grew at fastest rate for years in February

Greece has endured nearly seven weeks of political uncertainty which threatened to spark turmoil throughout the eurozone and beyond.

BBC: Greece parties agree coalition government

They voted because they want to end a phase which threatened to make the country collapse over everybody's heads.

BBC: Egyptian press debates constitution referendum results