Working in paddy fields for decades, Yuan's lifelong dream was always to enable the Chinese people to fill their own bowls with rice .

这种悬垂结构是允许的。谁都知道，分词的动作是 Yuan 发出的，不可能是 dream。此种现象在新闻英语中，已经见怪不怪了，只要下文中能找到它的逻辑主语就行，哪怕是作定语或其他成分。又如：

Winning the match, their faces were alighted with happiness and excitement.

赢得比赛后，他们的脸上洋溢着喜悦和兴奋。

 Running to school, a terrible idea struck her.

她在往学校跑的时候，忽然想起了一个令人生畏的念头。

Seriously wounded, the hospital could do nothing about him.

伤得很重，医院对他无能为力。

Eating my dinner, the sky cleared up.

我吃饭时，天转晴了。

黑体部分就是对应的逻辑主语。