The phrase 'by exclusively' is correct and can be used in written English.
You can use this phrase to mean that something happens in a particular way and no other way. For example, "She earned her money by exclusively freelancing."
Pastel mohair suits worn by exclusively black models caused fashion to take notice.
He may well do so by exclusively running on his record and attacking his opponent.
It creates jobs in the village by exclusively using locally made or grown products.
By exclusively using a personal account, Clinton may have violated several federal stipulations.
Housing for Women owns around 1,000 properties across London and empowers women by exclusively offering female-lead tenancies.
The classical framework, however, addresses these patterns by exclusively invoking natural selection on suitably imposed fitness landscapes.
To determine the mass of colostrum ingested by exclusively breastfed newborn infants during the first 24 hours of extrauterine life.
The Mitchell principles, as they become known, demanded a renunciation of violence from all Ulster's parties and the commitment that they pursue their goals by "exclusively peaceful means".
This debut novel evokes a future world in which gender is unimportant, a transformation Leckie renders by exclusively referring to characters with the pronoun "she".
In a second study, it was proposed the substitution of all the nutrients and inductors by exclusively skim milk and glycerol.
Sand storage dams are hydraulic retention structures that increase the volume of coarse sediments in seasonal sandy streams by exclusively blocking the bedload transport during runoff events.
