unpredictable

US /ˌʌn.prɪˈdɪk.tə.bəl/
UK /ˌʌn.prɪˈdɪk.tə.bəl/
"unpredictable" picture
1.

不可预测的, 变幻莫测的

not able to be foreseen or predicted; variable

:
The weather in this region is highly unpredictable.
这个地区的天气非常变幻莫测
His behavior has become increasingly unpredictable.
他的行为变得越来越难以预测