The phrase "are the main thrust" is correct and usable in written English.
It can be used to indicate the primary focus or central argument of a discussion, paper, or presentation.
Example: "The findings of this research are the main thrust of our presentation today, highlighting the importance of sustainable practices."
Alternatives: "represent the core argument" or "serve as the primary focus.".
Probably a bit, but that can't be the main thrust of it.
Make sure you sow your alliums deep being the main thrust.
That said, at 9.30am this morning, this point was going to be the main thrust of the review, once I stopped playing.
Financial damage is the main thrust of the prosecutors' claim against Hammond and his fellow LulzSec members, but it isn't really the money that matters.
KELEFA SANNEH: It's interesting: if you go back and look at the debate that preceded the passage of S.B. 1070 in 2010, it doesn't seem as if concern about stolen jobs is the main thrust.
I suppose what she saw in me was someone who was staying true to their self, which seems to be the main thrust of what sparked people's imaginations.
Providing art and culture for all was the main thrust of the white paper published by the former arts minister Ed Vaizey, the first since Jennie Lee's groundbreaking report in 1965.
It was for me, at least, and it seemed like that was the main thrust of a lot of the essays and responses first written when Chatroulette came on the scene — like a warped version of that Dr. Seuss book "Oh, the People You'll Meet".
Matson says improving safety is the main thrust of London's £913m cycling drive, with a grid of high quality cycle routes crisscrossing the city, using a combination of segregated cycle ways – including the east-west cycling superhighway – and quieter back-route streets that will be well signposted and prioritise cyclists.
This was the main thrust of the letter that more than 80 prominent members of the British literary establishment sent to justice secretary Chris Grayling last month, expressing their disagreement with the newly enforced ban on family members and friends sending books to prisoners.
