"All surface activities are suspended until the radiation goes down to normal."

Recent rainfall often results in a flurry of surface activity.

Why should we not invite them in and let them watch our surface activities.

We were getting into an area of recent surface activity; the surface was really treacherous.

Surface activity appears to be related to the age and rotation rate of main-sequence stars.

"Report every two minutes, report any surface activity within ten miles, Lightfoot out."

Thus, older stars such as the Sun have a much slower rate of rotation and a lower level of surface activity.

The building of the Husar-rover types is focusing on the basic planetary surface activities by moving vehicle.

Many research groups have investigated the surface activities of nanoparticles with amphiphilic properties.

Young, rapidly rotating stars tend to have high levels of surface activity because of their magnetic field.

Many of the surface activities took longer than expected, so they had to stop documenting sample collection halfway through the allotted 34 min.

Spawning bluegills are not skittish, but too much surface activity will drive them off the "beds."

Up close you become enthralled by the loosely idiosyncratic, nonstop surface activity (Johnson).

The enemy's surface activity continued to be intense but Farge was feeling a reaction to the strain of the last twelve hours.

"The climate hardly encourages any unnecessary surface activity."

However, the very few small craters on Callisto indicate a small degree of current surface activity.

With a seismograph they determine that the rumbles are due to some kind of surface activity, not deep earthquakes.

'Sanderson told me there was probably constant surface activity.'

Rather, it is based on the complex analysis of the surface activity of the molecule as well as relative size.

This would enable lunar surface activities and further reduce transportation costs within and out from cislunar space.

If a star displays magnetic surface activity such as starspots, then these features can be tracked to estimate the rotation rate.

Section 404 of the Clean Water Act regulates mining projects, and other industrial surface activities.

"I think there is a lot of frenetic surface activity, but not a lot of activity to do anything about it."

This was probably caused by magma movement near the surface, but there was no surface activity or eruption.

But beneath that surface activity he was pushing under the constant preoccupation with safety, food, shelter-the job at hand-his own private concerns.