这条街道被收窄以提高行人安全。

The street was ___narrowed to improve pedestrian safety.

她读着文件，怀疑地眯起了眼睛。

Her eyes ___narrowed in suspicion as she read the document.

新政策有效地减少了可供通行的车道。

The new policy effectively ___narrowed the available lanes for traffic.