slot grit chamber

例句：

1. 1. The printer has a slot for paper feed.
   打印机有一个用于送纸的插槽。
2. 2. She inserted the key into the lock with a slotted key.
   她用一个带槽的钥匙插入锁。
3. 3. The machine has several slots for different sizes of coins.
   这台机器有几个不同大小的槽，用来放置不同面额的硬币。