zero in on somebody/something phrasal verbphr v a) ATTENTIONto direct all your attention towards a particular person or thing 全力对付,全神贯注于 SYN home in on She immediately zeroed in on the weak point in his argument. 她立即全力攻击他论据中的薄弱环节。
b) PMWSHOOTto aim a gun or other weapon towards something or someone 把〔枪炮等〕瞄准
→ zero in on somebody/something at zero2(1)