unemotional
adjective uk/ˌʌn.ɪˈməʊ.ʃən.əl/ us/ˌʌn.ɪˈmoʊ.ʃən.əl/
无动于衷的，冷漠的
not having or expressing strong feelings, often when this is surprising or a bad thing
Investigators said the couple seemed oddly unemotional about the disappearance. 调查人员说，这对夫妇似乎对失踪事件态度漠然。
They described him as cold and unemotional. 他们形容他冷酷无情。
不感情用事的，理智的
not allowing strong feelings to influence your decisions
He was rational and unemotional in his response. 他的反应很理性，没有感情用事。