Maitain visual contact to person in water.

视线跟踪落水人。

We've lost visual contact with the suspect.

嫌犯已失去踪迹。

No need to maintain visual contact.

不需要目视跟踪。

We look at assessment as all the information that we can gather ahead of time, plus what we can read from this person the minute we come into visual contact and then throughout the process.

我们将评估视为我们可以提前收集的所有信息，加上我们在与这个人进行视觉接触的那一刻以及整个过程中可以从他那里读到的信息。