New Words：

drawbridge ['drɔ:.bridʒ] n.吊桥
glass bead [bi:d] 玻璃珠

Sample Sentences：

They raised the drawbridge, I have no way out.
The knight rode over the drawbridge into the castle.
She accidentally swallowed a glass bead.

accidentally [.æksi'dentəli] adv. 偶然地, 意外地

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