anxiety
单词辨析：
强调由某事的不确定性而引起的焦虑或恐惧，也指因失败、不幸、灾难等而产生的忧虑心情。
Anxiety overtook her when she heard her husband had had an accident.
听到丈夫出了车祸，她非常焦急。
Our anxiety grew with the falling night.
随着夜幕降临，我们越发焦虑。
强调因恐惧或责任而产生的忧虑或负担。
She is single, and has no cares.
她单身，没有负担。
She is free from care.
她无忧无虑。
强调对和自己或他人有利害关系的人或事物的担心或关切。
His child's future was his greatest concern.
孩子的前途是他最大的担忧。
The woman's concern for her sick child is great.
那个妇女非常挂念生病的孩子。
My concern is only with my business.
我关心的只有我的生意。
强调心绪不宁的感觉。
public unease about financial policy
民众对财政政策的忧虑
Most students now feel a growing sense of unease about their future.
大多数学生现在对前途感到越来越不安。
强调心烦意乱，心里老惦记着某人或某事，有时含瞎操心之意。
Lack of food is one of their worries.
缺粮是令他们担忧的事情之一。
He lives alone without any worries.
他一个人生活，无忧无虑。
相关例句：
Anxiety is integral to the human condition.
焦虑是人类的基本生存状况之一。
Her face was careworn with anxiety.
她脸上一副焦虑万分的神情。
Many editorials express their anxieties about the economic chaos in the country.
许多社论对该国经济的混乱状况表示忧虑。
Women who eat plenty of fresh vegetables are far less likely to suffer anxiety or depression
吃新鲜蔬菜多的女性患焦虑症或抑郁症的几率要小很多。
My sister puzzles me and causes me anxiety.
我妹妹总让我捉摸不透，弄得我焦虑不安。
Little by little she lost the taut, strained air of perpetual anxiety.
长期焦虑带来的紧张而疲惫的神色从她脸上慢慢消失了。