He will doubtless try and persuade his colleagues to change their minds.

他很可能会试图说服同事们改变主意。

Doubtless he was justified in some of his criticism of the media.

他对媒体的一些批评性言论无疑是合乎情理的。

She took off her shoes, doubtless because her feet hurt.

她脱掉了鞋子，大概是因为脚疼。