Companies that engage in ultrahazardous activities must carry specialized insurance to protect the public.

The community center offers weekend activities for children and adults.

The astronauts completed multiple extravehicular activities to repair the solar arrays.

During the job interview, his nervous displacement activities, like fidgeting and tapping his foot, made it clear he was uncomfortable.

Under polarized light, the mineral's optical activities revealed subtle differences between the samples.

The research team published detailed measurements of the catalytic activities under varying temperatures.