The phrase "a strong testimony" is correct and usable in written English.
It can be used when referring to a compelling or persuasive account or evidence provided by someone, often in a legal or personal context.
Example: "Her experience served as a strong testimony to the effectiveness of the new treatment."
Alternatives: "a powerful account" or "a compelling witness statement."
Last year, the United States exported an all-time record of $2.1 trillion in goods and services--a strong testimony to the success of American brands and the "American brand".
Even the more restrained items gave strong testimony that Mr. Toscano is a chef who has come into his own.
In the leadup to the war, retired General Wesley Clark offered strong testimony to the Senate, predicting, almost to a T, what the aftermath of an invasion would be.
Kirby said many things shocked him about the lives of ordinary North Koreans, but he mentioned in particular the regime's denial that political prison camps exist, "especially given the strong testimony and the corroboration by the international satellite images now available to the world".
She probably deserved the award more last week, for her strong testimony before Congress, but last week was inauguration week, so she really didn't have a chance.
During two days on the stand, he gave strong testimony that the Cowboys had not resisted but either thrown up their hands and turned out their coats to show they were not armed.
[A13.] A Former Enron Executive Testifies on Contracts A former Enron executive gave the strongest testimony yet in a five-week-old trial that Jeffrey K. Skilling, the company's former chief executive, signed off on a controversial accounting shift involving troubled trading contracts.
Had the court overturned the conviction, it would have set a strong precedent that testimony from experts on eyewitnesses must be allowed, he said.
A former Enron executive on Tuesday gave the strongest testimony yet in the five-week-old trial that Jeffrey K. Skilling, the company's former chief executive, signed off on a controversial accounting shift involving troubled trading contracts.
The strongest testimony for the defense came today as Mr. Hardin questioned Mr. Duncan about his specific knowledge regarding documents he destroyed.
