atypical

US /ˌeɪˈtɪp.ɪ.kəl/
UK /ˌeɪˈtɪp.ɪ.kəl/
"atypical" picture
1.

非典型的, 不寻常的

not representative of a type, group, or class; unusual.

:
His response was atypical of his usual calm demeanor.
他的反应不符合他平时冷静的举止。
The patient presented with atypical symptoms.
病人出现了非典型症状。