adj.多（易）变的；不确定的；变化无常的

The weather was changeful, alternating between sunshine and rain all day.
天气变化无常，整天时晴时雨。
Her mood is so changeful that it's hard to predict what she'll be like next.
她的情绪变化多端，很难预测她接下来会怎样。
In the changeful world of fashion, trends come and go quickly.
在瞬息万变的时尚界，潮流来去匆匆。
His political views were changeful, often shifting with the winds of public opinion.
他的政治观点变化莫测，常常随着舆论风向转变。
The market for tech gadgets is highly changeful; one must stay updated to succeed.
科技产品市场风云变幻，要想成功必须随时跟进。
As a child, her interests were constantly changeful, from painting to dancing.
小时候，她的兴趣爱好不断变化，从画画到跳舞。
The teacher praised the student for his changeful approach to problem-solving.
老师赞扬学生解决问题方法多样且灵活。
The landscape in this region is incredibly changeful, offering breathtaking vistas at every turn.
这个地区的风景变化无穷，每一处转角都令人叹为观止。
The relationship between the two friends had become changeful after their argument.
那次争吵后，两个朋友之间的关系变得复杂多变。
The CEO's decision-making style is known for being changeful, which sometimes frustrates employees.
这位CEO的决策风格以善变著称，有时会让员工感到沮丧。