I came across a group of children playing.
我碰到一群正在玩耍的小孩。
2.artificial intelligence 人工智能
Managers have learned to grapple with networking, artificial intelligence, computer-aided engineering and manufacturing.
经理们已经学会了如何应对联网、人工智能、计算机辅助工程和制造。
3.plain sight 众目睽睽
She counted more than a dozen in plain sight as the steamer drew closer.
当轮船靠近时，她一眼就数出了十多艘来。
4.mass production 量产
In the mass production era multinational firms tended to centralize their operations
在大规模生产的时代，跨国公司往往实行集权化经营。
5. time after time 多次反复
The system has proved fallible time after time
时间一次又一次证明，这个系统是会出错的。
