形容詞 noncommittal:

1. refusing to bind oneself to a particular course of action or view or the like

1. I asked him if he approved of our plan, but he was noncommittal.
   我問他是否贊同我們的計(jì)劃，但他態(tài)度不明朗。
2. He was rather noncommittal.
   他說得很活絡(luò)。
3. An intentionally noncommittal or ambiguous statement.
   曖昧的回答，故意的不信任故意說得模棱兩可的話，不明確的話

non.com.mit.tal

adj.（形容詞）
Refusing commitment to a particular opinion or course of action; not revealing what one feels or thinks:
態(tài)度暖昧的：拒絕贊成某一特殊意見或行動(dòng)步驟的；不表明某人的所感或所想的：
例句：
.His face was the color of a freshly baked pork pie and as noncommittal.(Thomas Pynchon)
.他的臉色象剛剛烤過的豬肉餅，而且表情暖昧.(托馬斯·平瓊)

【引伸】
non.commit.tally
adv.（副詞）