noncommittally
adv. 不明确地；不表态地
例句
"I like some of his novels better than others," I said noncommittally.
我不置可否地说：“他的小说有几部我更喜欢些。”
《柯林斯英汉双解大词典》
The old man smiled noncommittally, then turn and go away.
那位老人不置可否地淡淡一笑，就转身走了。
《新英汉大辞典》
He pursed his lips noncommittally.
他咬了咬嘴唇，不置可否。
