But the behind-the-scenes activity in the video game business has remained, well, behind the scenes.

However, the main activity of the union remained in the film sector.

The patients can be mobile and perform their everyday activities yet remain under observation.

Its principal activities remain in commercial and investment banking services.

Despite these difficulties, regional activities remained at a high level.

Precisely how much illegal activity remains is difficult to determine.

The biological activity of these compounds remains to be determined.

Their favorite activity remains hiking in the mountains near Beijing.

But his favorite activity remains simply standing in front of a crowd with a microphone.

Most other activities went underground and have remained largely hidden.