1. disturb in mind or make uneasy or cause to be worried or alarmed;

   "She was rather perturbed by the news that her father was seriously ill"
   

2. disturb or interfere with the usual path of an electron or atom;

   "The electrons were perturbed by the passing ion"
   

3. cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull;

   "The orbits of these stars were perturbed by the passings of a comet"
   

4. throw into great confusion or disorder;

   "Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt"
   

1.使焦虑；使不安
If somethingperturbs you, it worries you quite a lot.

e.g. What perturbs me is that magazine articles are so much shorter nowadays.
让我不安的是现在杂志文章都短多了。

1. 使心烦意乱,扰乱：pertinent 适当,有关的 |perturb 使心烦意乱,扰乱 | pervade 弥漫,遍布

2. perturb的意思

2. 扰乱：peculate#盗用 |perturb#扰乱 | pester#使困恼

3. perturb

3. 扰动：pert 程序监定技术 |perturb 扰动 |perturbation 扰动

4. 感到不安：turb搅动 |perturb感到不安 | turbid浑浊的

Her sudden appearance did not seem to perturb him in the least.

她的突然出现似乎一点也没有令他不安。

a perturbed young man

烦恼的年轻人

She didn't seem perturbed at the change of plan.

她对改变计划似乎毫不在意。

What perturbs me is that magazine articles are so much shorter nowadays.

让我不安的是现在杂志文章都短多了。

Stellar passings can perturb the orbits of comets.

行星的运行会使彗星的轨道发生扰动.

Venus, Earth, and other planets also perturb Mercury's motion.

金星, 地球和其他行星也使水星的运动受到摄动.

Her sudden appearance did not seem to perturb him in the least.

她的突然出现似乎一点也没有令他不安。

upset，agitate，disturb，perturb

这些动词均有“使不安，使心烦意乱”之意。

upset最普通，最通俗用词，侧重失去精神上的平静，心理上完全丧失平衡。

agitate侧重指内心的焦虑，难于控制，表露于外。

disturb指因某人的行动、扰乱、妨碍安静等而使人不得安宁。

perturb书面语用词，指使人焦急烦恼，扰得心情不安。