VOA慢速英语:Robots Ready to Work in Restaurants

短语讲解：

1. He says robots cannot do everything a human can, but they are able to work without becoming tired.

be able to 能够
例句：We shall not be able to furnish additional copies.
我们将不能提供额外的副本。

2. He says people all over the world now eat sushi, but there are not enough skilled workers to prepare it.

all over the world 全世界
例句：People all over the world unite!
全世界人民联合起来!