影视英语口语:密切关注

“密切关注”在英语口语里能怎么说？

蹩脚口语：pay attention to 
地道口语：keep an eye on

影视来源：《巫山历险记》
剧情引导：
一个拉斯维加斯的出租车司机，从黑社会老大那里出来决定金盆洗手，却不想搭上一对有超能力的外星兄妹被坏人追踪，他却误认为是黑社会的人跑来找他……

- You two okay?
- We are...
- We should just keep moving.
- Stay here. What you didn't get the message? I told Frank and Marty I was out! You tell Wolf for me that he's gonna pay for my repairs.
- You are in way over your head here. I want a complete profile of the driver. You think he's collaborating? Either way he's a liability. Get me somebody at transport.
...