slotless

例句：

1. 1.The machine is slotless, so it can't be repaired.
   这台机器是无槽的，所以无法修理。
2. 2. The car has a slotless engine, which makes it more fuel-efficient.
   这辆车有一个无槽的发动机，这使得它更省油。
3. 3. The new design is slotless, making it easier to clean and maintain.
   新设计是无槽的，这使得清洁和维护更容易。