Make sure that you execute all movements smoothly and without jerking.一定要保证所有动作自然流畅，不要一顿一顿的。The replumbing and rewiring of the flat ran very smoothly.公寓里管道和电线的更换工作都进展得非常顺利。The system was clearly not functioning smoothly ...
The system was clearly not functioning smoothly or transparently.该系统显然运行并不顺畅，也不明晰。The bolt slotted smoothly into place.插销很容易就插上了.Soon they found their scientific reseaches were not progressing smoothly.不久他们发现他们的科学研究工作进展得...