at a time

• He threw himself into an important friendship, at a time when he had probably written one draft of his sixth book, on whaling .
  在他写完第六部著作初稿的时候，他特别钻研了有关捕鲸的事，和它结了不解之缘。
• Moreover, he threw himself into an important friendship, at a time when he had probably written one draft of his sixth book, on whaling .
  此外，在他写完第六部著作初稿的时候，他特别钻研了有关捕鲸的事，和它结下了不解之缘。
• The food trade balance has shifted sharply against developing countries at a time of growing indebtedness and foreign exchange scarcities .
  在发展国家的债务越来越重，和外汇越来越紧缺的时候，它们的粮食贸易收支状况严重恶化了。
• Clear1y slowly and understandably one word at a time
  与正常语速的普通的英语相比
• You can work with more than one document at a time .
  您可以同时处理多篇文档。
• Hey , one at a time . one at a time , all right
  嗨，一个一个来，一个一个来好吗？
• Cross the road one at a time don ' t bunch up
  一次一个地过马路别都挤在一起。
• Gavel banging ) - one at a time , please ! one at a time
  请一个一个说!一个一个说
• I miss my family at a time when i hear this song
  每当我听到这首歌就非常想家。