第一部分是更不确定的语气和性质。

The first part is more undetermined in tone and character.

youdao

他用确定的语气回答，然后又告诉大家，列车将中途不停直达利物浦。

He added that the train went straight through to Liverpool.

youdao

在他回忆早年的家族企业时，他的声音里带有一种确定无疑的怀旧语气。

There is an unmistakable note of nostalgia in his voice when he looks back on the early years of the family business.

《柯林斯英汉双解大词典》