keep upright

释义

[法]切勿倒置；

Why Does a Bicycle Keep Upright?
Keep tubes UPRIGHT with a little inspiration from the garden
Mobile, wind-resistant support e.g. for posters, has counterbalances which keep poster in upright condition
1976. u201cWhy does a bicycle keep upright?u201d(Math. Gazette, Vol. XXX, No. 291)
Packers OL aims to keep Rodgers upright vs. Saints
Keep Rolling Luggage Upright with Physics
Idea Exchange: Keep tubes upright with a little inspiration from the garden
Device to keep surfboard masts upright
Texas' two-step plan: to fulfill its dream, Texas must beat Oklahoma—finally—and keep Vince Young upright all season
Device to keep toilet seat upright