YOU SAID:

The guard expressed disbelief upon hearing about the trial.

INTO JAPANESE

警備員は裁判について聞いて不信感を表明した。

BACK INTO ENGLISH

The security guard expressed disbelief when he heard about the trial.

INTO JAPANESE

警備員は裁判について聞いて不信感を表明した。

BACK INTO ENGLISH

The security guard expressed disbelief when he heard about the trial.