flapping action造句
例句與造句
- It is now even practicable to use a bird-like flapping action to provide thrust as an ornithopter.
- Think of the flapping action as pressurizing the air below the birds'wings and rareifying the air above it, which causes the birds to be lifted.
- It's difficult to find flapping action in a sentence. 用flapping action造句挺難的