How to use in-sentence of “at one time”:
+ Things that were obscene at one time no longer are at another.
+ The Cathedral of St Andrew was at one time Scotland’s largest building.
+ Bairiki is sometimes considered “the” capital of Kiribati because at one time both the Parliament, the Presidency and main administrative offices were located there.
+ And the store at one time was the largest furniture company in the south.
+ A sixth concerto, in E flat major, was at one time attributed to Mozart but is now attributed instead to Johann Friedrich Eck.

Example sentences of “at one time”:
+ Sturtevant at one time had 42 species of "Drosophila" in his lab for examination.
+ Noel stated that the lyrics of the song are about a circle of friends that he was involved with at one time in his life, as well as being semi-autobiographical.
+ He was also at one time a member of the and Inner Circle Inner Circle and half of the duo Bunny Ricky.
+ Sturtevant at one time had 42 species of “Drosophila” in his lab for examination.
+ Noel stated that the lyrics of the song are about a circle of friends that he was involved with at one time in his life, as well as being semi-autobiographical.
+ He was also at one time a member of the and Inner Circle Inner Circle and half of the duo Bunny Ricky.
+ Electronic ballasts were at one time more expensive than magnetic ballasts, but now the price is about the same.
+ It was owned by D W Karn, who was at one time mayor of Woodstock.
+ In the British Isles, Anglicanism has been the official or State religion in all parts at one time or another.
+ We either measure the momentum of a photon or electron at one time and then without any more delay than necessary measure its position, or we switch things around and measure position first and momentum second.
+ This tends to change over time within cultures, so people that live in a country at one time in history might consider abnormal what people who live in the same country consider normal years before or years later.
+ This is useful to limit the number seen at one time in articles with many coordinates.
+ Using that, some of the more modern emergency communication systems such as Siemens Sygnal or MessageNet Connections say that they can send a single message at one time that gives full details to first responders while customizing that same message to give more simple instructions to lock doors to the people inside the building.
+ As the glacier melts, areas that were at one time covered by snow and ice are now water or land.
+ Nine schools were members at one time or another, but no more than seven played in any season.
