the ability of a wheel or tyre to hold the ground without sliding

In deep snow, people should use snow tyres on their vehicles to give them better traction. 在积雪深厚的地方，人们应该给车子装上雪地轮胎以增强轮胎的附着摩擦力。

the pulling of a heavy load over a surface, or the power used in this

steam traction 蒸汽牵引

a form of medical treatment that involves using special equipment to pull gently an injured part of the body, especially an arm or leg, for a long period of time

After her back operation poor Mira was in traction for six weeks. 背部手术后，可怜的米拉做了6个星期的牵引治疗。

the fact of an idea, product, etc. becoming popular or being accepted

In our digital age, it takes less time for new words and phrases to gain traction than it did in the past. 在当前数码时代，新词或词组流行起来要过去快得多。