track system

基本解释

A dual track system on both units enhances mobility and makes it possible for them to navigate areas humans can't safely reach.
在机器人身上装备的双追踪系统能提高它们的机动性，使其能在人类无法安全到达的地方行驶。
Some ad firms have started talking of creating a do-not-track system of their own, that would limit the damage to their digital activities.
某些广告公司已开始声称要打造自己的“不跟踪”机制，这会减少其数字广告活动可能受到的冲击。
The safest and most durable track system available.
最安全和最持久的跟踪系统。

And London's Transport Authority has promoted the Oyster card, a magnetic payment system that keeps track of where people have been and when.
It was like the off-track betting system.
这有点像场外下注。
斯坦福公开课 - 经济学课程节选
So, these memory cells are a way that your immune system keeps track of antigens that it's been exposed to for even if maybe the plasma cells that were producing antibody in response to the initial exposure have died and disappeared.
所以,这些记忆细胞,是人体免疫系统记忆抗原的一种方法,即使由浆细胞产生的抗体,在初次免疫应答中全部被消灭,记忆细胞仍然能迅速分化为抗体分泌细胞
耶鲁公开课 - 生物医学工程探索课程节选

Despite an overhaul of the bankruptcy laws in 1998, it is still awesomely difficult to foreclose on debts: the definition of bankruptcy turns on net worth, as opposed to cash flow, and the process is slowed down by a two-track system that separates forced restructurings from forced liquidations.
ECONOMIST: Thailand's biggest problem is debt