1. The gunshot started three birds at one time.
   枪声一下子把三只鸟给惊飞了。
2. I can only talk to one at a time.
   我只能一次跟一个人谈话。
3. One should be generous with his time in assisting others.
   一个人应该尽量协助别人。
4. Let's splurge on a fried chicken for one time.
   我们就奢侈一次买只炸鸡吧。
5. She's moving up the ranks one step at a time.
   她一步一步向上爬

　1个副词解释