Ballism was defined as "Repetitive, but constantly varying, large amplitude involuntary movements of the proximal parts of the limbs".

颤搐被定义为“四肢近端重复的，但不断变化的大幅度不自主运动”。

youdao

The speech sounds of all languages are gradually but constantly changing.

各种语言的语音总在不断变迁。

《新英汉大辞典》

Knowledge isn't static, but constantly growing.

知识不是静态的，时常增长。

youdao

But along the way organizers constantly faced those who doubted South Africa's ability to organize the tournament, complete the stadiums even during the team draw in Cape Town six months ago.

VOA: standard.2010.06.07

But they constantly show up and they say, "We've brought our team of people, and we want to learn."

经常会有这些公司找到我们说，我们带来了自己的团队，想向你们学习“

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

Now Microsoft is sort of a funny place, we've got these big businesses but in the software business big businesses need to be constantly recreated.

现今的微软是非常有意思的地方，我们运行着庞大的生意，但是在软件交易上,大宗交易更像是消遣。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选

Her English is faltering but constantly improving after two months of mentoring with Victoria.

BBC: London project gives immigrants lessons in being British

This is a bit like dating one person but constantly checking Match.com to see what other options you might have.

WSJ: Ask Ariely: Dan Ariely on Where to Eat Lunch and Work

What is a winning idea in this world of real-time optimization, where the idea is never static, but constantly shifting by design?

FORBES: Musings On The Way To Cannes