yoke 是统治,束缚的意思,under the Mongolian yoke after 88 years 就可以翻译为“在蒙古人统治下的80年之后”这里的under the Mongolian yoke是介词短语做chaff的修饰语,而after 88 years是作为时间状语,表示88年之后。
In 1368, chaffing under the Mongolian yoke after 88 years, an adviser to rebel chief Zhu Yuanzhang came up with a plot to send out rallying messages hidden in sweet pastries - much like fortune cookies.
chaffing under the Mongolian yoke after 88 years 动名词短语做状语, chaff 戏弄的意思, yoke 有统治的意思.