Big "in" big barn "is a descriptive adjective."

“大”在“大谷仓”中是个描写性形容词。

youdao

But there's certainly a big barn full of great furniture next to his house.

但是他房子旁边有个大谷仓装满了家具耶！

youdao

After the hoisting of the flag all the animals trooped into the big barn for a general assembly which was known as the Meeting.

升旗仪式结束后，所有动物列队到大谷仓参加一个被称为“动物大会”的会议。

youdao

They brought the dog to a big barn of a place, an actual barn beside an abandoned farmhouse, at the back of the airport.

NEWYORKER: The Dog

Nothing typifies America's pastoral ideal like a big old barn.

ECONOMIST: The battle to save a vanishing American icon

Through a sidelight at the rear door he watched the flames race in the wind, flowing under his car and fanning out to light the corncrib, the smokehouse, and the big sagging barn, which went up in a howl of crackling lumber and dried-out hay.

NEWYORKER: Idols