speed用法搭配

　　speed用作名詞的'用法例句

　　The police are advising motorists to reduce speed because of the fog.由于有霧，警察告誡駕車者減慢速度。

　　This plane can reach speeds in excess of 1000 kilometers an hour.這架飛機可以達到每小時一千公里以上的速度。

　　She finished typewriting the letter at speed.她迅速打好那封信。