“Early last week, there were more delays than usual on certain train lines” - explain" a delay
to make something happen at a later time than originally planned or expected
“Rush hour had just begun when a herd of escaped cows found their way into a local railway station” - explain: rush hour
the busy part of the day when towns and cities are crowded
Rush hour had just begun when a herd of escaped cows found their way into a local railway station" - explain: a herd of sth
a large group of animals of the same type that live and feed together