removable graphite blocks

例句：

1. 1. The chair is removable, so it can be moved easily.
   椅子是可移动的，所以可以轻易地移动。
2. 2. The tool is removable, so you can take it apart and clean it.
   这个工具是可拆卸的，所以你可以把零件拆下来清洗。
3. 3. The table is removable, so it can be taken apart for storage.
   桌子是可拆卸的，所以可以拆下来存储。