其时, 当时

while away the time while the whim lasts all the while go while the going's good while make hay while the sun shines Strike while the iron is hot. pay the piper while other call the tune open more cities along the Yangtze River, while concentrating on the development and opening of the Pudong Area of Shanghai Good news never goes beyond the gate, while bad news spread far and wide. employ workers in accordance with production needs and increase efficiency while reducing the staff to develop this generation of products while researching on the next generation of products all the while strike while the iron's hot go while the going's good while Strike while the iron is hot make hay while the sun shines while symbol while statement worth while Do while while loop