yī shí
此一时彼一时丨盛极一时
cǐ yī shí bǐ yī shí | shèng jí yī shí
Times have changed | At the height of one's power/popularity
一时无出其右。
yī shí wú chū qí yòu
No one could surpass him/her at that time
一时半刻
yī shí bàn kè
A short while; a brief moment