that he accelerated before going over the railing,

他在越过栏杆之前加速了
which indicates that he was thrown into the water,

也就是说他是被扔进水里的
uh, presumably to finish him off without having to fire

凶手大概想一枪就结果他
an additional shot and attract unwanted attention,

这样就不会引来不必要的注意
but the murderer did not stay to make sure the victim was dead.

但是凶手没有亲眼看着被害者死去
Instead, he fled, stumbling over this disposal drum,

而是仓皇逃窜绊倒了这些废料桶
spraying, uh, antifreeze in a pattern that suggests

防冻液喷溅的形状说明
that he was running quickly.

他跑得很快
Well, that rules out the lieutenant as a suspect.

这就排除了副队长的嫌疑了
Thank you. Good point.

谢谢你说得好
Meanwhile, the victim swam

同时被害者游泳
all the way around over to here...

一直游到这儿