flat pontoon造句

例句与造句

1. Two flat pontoons made of a dense compression polystyrene, like Styrofoam, are fastened to the bike with a pair of the braces.
2. He wrote that the damage had dual mechanism : first, when the flat pontoon pitched above the waves, gravity subjected it to an enormous stress, bending the whole structure down.
3. It's difficult to find flat pontoon in a sentence. 用flat pontoon造句挺难的