The phrase "a trough around" is correct and usable in written English.
It can be used in contexts related to geography, agriculture, or metaphorical descriptions where a trough-like formation or area is being discussed.
Example: "The farmers built a trough around the field to collect rainwater for irrigation."
Alternatives: "a depression surrounding" or "a basin around".
Cities like San Francisco saw their population hit a trough around 1980 or so, as middle-class families fled for the suburbs.
San Francisco's population hit a trough around 1980, after steadily declining since the 1950s as the city's socially conservative white and Irish-Catholic population left for the suburbs.
The site amplification characteristics calculated by spectral ratios showed a trough around 0.6 Hz in the horizontal component and around 1 Hz in the vertical component that was replicated by the site-correct digital filters (Fig. 6b).
Seventy-five percent of the world's population will be urban by 2050 and the population in many American cities on both coasts including New York, San Francisco, Seattle and Boston have rebounded over the last three decades after hitting a trough around 1980.
Seventy-five percent of the world's population will be urban by 2050 and the population in many American cities on both coasts including New York, San Francisco, Seattle and Boston have rebounded over the last three decades after hitting a trough around 1980.
In the pdfGAL4/+ controls, activity level peaked at about CT13 followed by a rapid decline to a trough around CT17.
In the Nankai subduction zone, where the Philippine Sea plate is subducting beneath southwest Japan, extensive heat flow measurements have been made around the Nankai Trough, mainly on the floor of the trough (around the trench axis) and in the accretionary prism that has developed landward of the trough (e.g., Kinoshita and Yamano 1995).
There's an essay in there on "The Miz," from MTV's The Real World, and later the WWE, following his adventures as a marketing tool via post-reality-TV stardom, and yet every observation seems half-baked, a shallow trough around a dolled up premise.
Historically, he noted, corporate profits don't reach a trough until around nine months after a bear market ends.
U.S. sales will hit a trough of around 15.1 million in 2020.
After P3, the DRP for all the CTB+ cells shows a trough at around 20 60 µm from the reference cell.
