a stick of celery的意思|示意

He was eating a stick of celery.

他正在吃一根芹菜。

In other words, they could not distinguish a carrot from a stick of celery, but could say that it was a vegetable.

换言之，他们不能分辨出具体是一颗胡萝卜还是一捆芹菜，但能说出来是蔬菜。

People living near farms may be directly exposed to pesticides, although anyone else can be, too, just by eating a stick of celery.

居住在农场周围的人容易接触到农药，而每个人(不管是否住在农场附近)都可能仅仅因为吃了一根芹菜而接触它。