unemotional
adj. 不易动感情的；非感情的；无动于衷的
例句
She seemed very cool and unemotional.
她显得十分冷静。
《牛津词典》
He was unemotional, quiet, and reserved.
他不动感情、安静而矜持。
《柯林斯英汉双解大词典》
At first I kept cool and unemotional, then I began to cry.
开始时我保持镇定，不表露感情，然后我开始哭了。
