She pretty much single handedly invented the children's library.

她差不多是独立创立了儿童图书馆。

And so, I would say Carl Sagan single handedly changed my trajectory in life.

因此，我想说卡尔·萨根一手改变了我的人生轨迹。

And for nearly three decades, she single handedly kept Goodnight Moon out of the entire library system.

而在接近30年的时间里，她单枪匹马地将《晚安月亮》排除在整个图书馆系统之外。