The phrase "altered twice" is correct and usable in written English.
You can use it to describe something that has undergone two modifications or changes.
Example: "The document was altered twice before the final version was approved."
Alternatives: "modified two times" or "changed twice".
Brooks Brothers moved in the 1910s to its present location at Madison Avenue and 44th Street, and the old store has been radically altered twice, though its structural frame has been maintained.
It is, rather, the star's sustained eccentricity that inspires much of his appeal - that one jeweled glove ("I felt that one glove was cool; wearing two gloves seemed so ordinary"), the regular repairs to his appearance ("I have had my nose altered twice and I recently added a cleft to my chin, but that is it"), his exaggerated fondness for his pet monkey ("My chimp Bubbles is a constant delight").
The site was altered twice before, most recently as a paved parking lot, and before that as the site of the Henry Flagler's impressive Royal Palm Hotel.
In the course of a soliton (about 10 min), the directions of the shear forces and torques alter twice and the values thereupon change greatly.
Alter twice ran for other offices -- Lieutenant Governor in 1976 and Cook County Clerk in 1990 -- but was unsuccessful.
The bride was radiant in a gown that had been twice altered to meet the exigencies of pregnancy.
Genes whose expression level was altered more than twice were considered differentially expressed when they both fit the ratio and the Student's two-sample test (p value cut-off of 0.05) as described in the software Bioplot available from the biochips platform of the Toulouse Midi-Pyrenees Genopole [ 54].
He has had it surgically altered not once but twice, and a third intervention may well be in order.
Kant went on the same stroll through Königsberg every day at 5 o'clock, and altered his route only twice: once to get an early copy of "Emile", and once when news came that revolution had broken out in France.
After 5 weeks, the altered plants were about twice the size of their common cousins.
But in the longer run, they cited concerns about competition from the deep-pocketed likes of Google and Amazon.com Inc; the need to spend continuously to drive user growth; and questions about accounting after the company altered its IPO filings twice to change the way it accounted for revenue.
