They say that vehicles that are capable of sensing their surrounding environment, and their proximity to other cars could maintain safe distances while helping to keep traffic moving.

他们提出，能够探测周围驾驶环境的车辆，在接近其他车辆的时候能够自动保持安全距离，以帮助保持交通畅通。

youdao

A fun way to keep kids excited to keep running is to have them track their distances and add them up.

有个好玩的办法可以保持孩子对跑步的热情，就是记下他们跑过的距离并算出总数。

youdao

In the wild, elephants often need to communicate over long distances, using low frequency calls to keep tabs on other members of their group.

在野生环境中，大象经常要在距离很远的时候，彼此进行沟通和交流，这时它们会使用低频叫声和同一象群中的其它成员保持联系。

youdao

Trains had special container cars with ice to keep meat, milk and other goods cold for long distances on their way to market.

VOA: special.2010.01.11

It is famous for shipping outrageous ingredients across great distances, at enormous cost, to keep both millionaire whales and on-a-budget buffet hogs happy.

FORBES: Why We Need a Food Truck Index

The Supreme Court decided in 1853 that Morse could keep the patent on his innovative method for transmitting telegraph signals over long distances, but not the fundamental scientific principle that electricity can transmit information.

FORBES: Mayo Clinic Case Asks If A Doctor's Method Can Be Patented