The phrase "a modern activity" is correct and usable in written English.
You can use it to describe an action or task that is contemporary or relevant to current times.
Example: "Social media engagement is considered a modern activity that many businesses utilize for marketing."
Alternatives: "a contemporary practice" or "a current trend".
But, as Jay Bahadur makes clear in "The Pirates of Somalia," buccaneering has evolved into a very modern activity, complete with night vision goggles, GPS units and even investment advisers.
The sweeping descriptions of crowds and dry-goods displays justify Zola's characterization of the novel as "a poem of modern activity".
In fact, it may be argued that the modern activity of book collecting is largely a product of the printing press.
Modern activity recognition systems are usually multimodal and capitalize on a wide availability of resources [4].
For Rostow, encouraging this process meant promoting new "enclaves of modern activity" that could be economically fused together to become the nation's "normal condition … built, as it were, into its habits and institutional structure".
However, no conclusion can be drawn on the possible modern activity of these large-scale bedforms.
Combined with our Raman and SEM results that showed that specific microbially derived organic signatures have been preserved virtually unchanged in these old fossil terrace layers despite there being no clear indication of modern activity or clear remnant morphological biosignatures.
For more than 500 years, the town was largely ignored by history -- so when it was rediscovered by the budding tourism industry in the late 19th century, no modern activity had disfigured its ancient walls, its moment of brief medieval exuberance having been preserved like a fly in amber.
Because of our slightly younger average age and city location, we were supposedly one of the "new wave" WIs that had started springing up in the years before – groups that rejected crochet and did more modern activities, often with more than a tinge of irony.
Typically, a large pool of unskilled labor is transferred from subsistence-level occupations to more modern activities that do not demand much upgrading of these workers' skills, but nonetheless employ higher levels of capital and embedded technology.
