关头

lì shǐ zhuǎn zhé guān tóu

历史转折关头

historical turning point

zài gé mìng de zhòng yào guān tóu

在革命的重要关头

at important junctures of the revolution

wēi jí guān tóu

危急关头

critical point

zài zhòng dà lì shǐ guān tóu

在重大历史关头

at an important historical juncture

tā zài zuì hòu guān tóu duó guàn

她在最后关头夺冠。

She snatched a last gasp winner.