"this is underscored by" is a correct and usable phrase in written English.
It is typically used to emphasize or highlight a specific point or idea. Example: "The company's success is underscored by its strong financial performance over the past year."
This is underscored by a noise in the distance: Caw! Caw!
This is underscored by the Ekjut trial's most telling outcome: the poorest and most marginalised people benefited the most.
This is underscored by the imprecision of much of the singing, in which notes and words are often lost.
This is underscored by the anger evident in his last two novels, Proxopera (1977) and Nothing Happens in Carmincross (1985), which deal with political violence.
This is underscored by Simon Godwin's superb production where gunfire suddenly erupts on the golf course and where even the austere confines of an institutional bedroom may be invaded by the image of a shattered soldier.
This is underscored by classical examples of conservative technologies (Arthur 1988a, b; David 1985, 2001).
Also, the whole tampering paradigm is premised on the idea that it is only stochastic machine variability that is important, and this is underscored by Deming's use of a very passive machine, the funnel.
This was underscored by Obama's perfunctory drop-by to a sanitized beach in Grand Isle, La.
This was underscored by the case of Lee Ji-young, the host of a popular English-learning radio program for seven years.
This was underscored by a new television commercial that David Lynch directed for a Gucci fragrance, and which was played on multiple screens before the show.
This was underscored by the murder of leftist opposition leader Chokri Belaid, who was shot in front of his house by unidentified assailants last week.
