In the 1930s, industrial designers began to make cars and other objects with smooth, curving lines.

VOA: special.2009.01.02

From 1983 to the present as you just said, the economy has a long period of smooth, robust expansion interrupted by two very mild recessions.

第二时期是从1983年至今，正如你所说，经济长时间处于,平稳强健的发展状态,而只出现了两次轻度衰退。

斯坦福公开课 - 经济学课程节选

The "Why don't" pattern is a very polite, very smooth way to suggest something.

Why don't”句型是一种非常礼貌、流畅地提出建议的方式。

Why don't 课堂 - SpeakingMax英语口语达人

Railroad companies employed thousands of workers to create the smooth,flat pathways required by trains.

VOA: special.2009.02.21

They like to hear the music of a smooth voice and so on.

婴儿们喜欢听到拥有平缓声音的音乐等等

耶鲁公开课 - 心理学导论课程节选

The researchers studied small sharks called smooth dogfish, common to America's New England coast.

VOA: special.2010.08.03

It is not normal to have just a smooth, easy ride through a World Cup qualifying.

VOA: standard.2009.06.07

"I think the tragedy is he had to compromise upon the attempts to clear his name in order to smooth the path home to Libya,"

VOA: standard.2009.09.19

During that time, while on tour in Europe and Southeast Asia, he decided to stray from his usual regimen of smooth jazz and focus on the jazz classics he heard growing up.

VOA: standard.2010.04.12