1 B2 习语 中性
把全部注意力或精力集中在一件具体事情上,尤其是在排除其他可能之后
"After weeks of investigation, detectives finally zeroed in on the most likely suspect."
“
We need to zero in on the issues that matter most to working families.
— Common political speech phrasing, widely attributed to various US politicians including Bill Clinton
不可分离