"he was in the forefront"
"he was at the head of the column"
"the Cotswolds were once at the forefront of woollen manufacturing in England"
"the idea of motion was always to the forefront of his mind and central to his philosophy"
The great statutes which stand in the forefront of our laws.
出自： J. R. Green
They were in the forefront of progress and invention.
出自： G. M. Trevelyan