adj.（轮胎）无花纹的
Mr Stocks can expect a gruelling week on the publicity treadmill.
斯托克斯先生可以预见下一周会被枯燥繁重的宣传工作搞得焦头烂额。
I'd like to escape the office treadmill.
我想摆脱办公室的枯燥工作。
The treadmill has a heart rate monitor.
跑步机上有个脉搏监视器.