有两说法比如打2折⑴80%off
(2)discount of 80%
机票是往返机票round-trip ticket
单程机票 one/single-way ticket
八折：20% off
八五折：at 15% discount
九七折：discount three percent
七折：discount of 30%
九折：ten percent off
六折：make an allowance of 40%
有两说法比如打2折⑴80%off
(2)discount of 80%
机票是往返机票round-trip ticket
单程机票 one/single-way ticket
八折：20% off
八五折：at 15% discount
九七折：discount three percent
七折：discount of 30%
九折：ten percent off
六折：make an allowance of 40%