zero in on
phrasal verbzero in on somebody/something
- to fix all your attention on the person or thing mentioned
集中全部注意力于 - They zeroed in on the key issues.
他们集中讨论了关键问题。
- They zeroed in on the key issues.
- to aim guns, etc. at the person or thing mentioned
（用枪炮等）瞄准