trillion

兆、萬億

The national debt has now passed thirty trillion dollars.

國債現在已經超過三十兆美元。

無數、大量口語，常用複數

There were trillions of ants swarming over the fallen fruit.

成千上萬的螞蟻爬滿了掉落的水果。

兆的、萬億的

They are aiming to build a trillion dollar company.

他們的目標是打造一家市值上兆美元的公司。