Mrs.Eiffler never asked about abrasion and maybe never noticed it.But I did.Every time I walked past the marred surface of the chalkboard, I remembered.Oh, how I remembered.

• 听到了大厅里传来的脚步声，我们尽最大的努力用更多的纸巾把擦过的地方弄干，还用一本书把任何可能泄密的湿痕扇干。