"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。”

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。

He pursed his lips noncommittally.

他咬了咬嘴唇，不置可否。