Ameliorating road traffic black spot can reduce the ratio and loss of traffic accident effectively. Identifying traffic black spots scientifically and reasonably is a key step in the management.

治理改善道路黑点可以有效地降低交通事故的发生率与损失后果，科学合理的黑点鉴别则是整个治理环节中的关键一步。

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While waiting at a traffic light, they saw a black Mercedes coupe on one side and a homeless man begging for food on the other.

在红绿灯旁等候的时候，他们看见一辆黑色奔驰轿车在一边，一个无家可归的人在另一边乞讨食物。

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Men in white shirts and black pants directed new customers with the efficiency of traffic cops, shepherding them to tables as soon as they became vacant.

男人穿着白衬衫和黑西裤，刚到的食客泊好车，被引领到刚收拾好的餐台前。

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Built initially to help deal with the floods that regularly threatened the city, it now co-ordinates 30 government agencies and provides mobile applications to keep citizens in touch with potential accidents, traffic black-spots and other city updates.

BBC: How will our future cities look?

Mobile devices, including tablet computers and smartphones, accounted for 14.3% of all online retail traffic on Black Friday, according to Coremetrics.

CNN: Apple, Amazon lead big tech Black Friday

When she realized she was a sitting duck in bumper-to-bumper traffic, Black turned around and found herself directly in the path of the most violent part of the storm.

NPR: Cleanup Goes On As Storms Move Toward East Coast