1. The chair has four castors for easy mobility. - 椅子上有四个脚轮，方便移动。
2. The cart's castors are made of durable rubber. - 这个推车的脚轮由耐用的橡胶制成。
3. The bed frame comes with locking castors for stability. - 床架配备了锁定式的脚轮，以确保稳定性。
4. The table's castors make it easy to move around the room. - 这张桌子的脚轮使其在房间内移动起来很方便。
5. The trolley's castors glide smoothly across the floor. - 手推车的脚轮在地板上平稳地滑动。
6. Make sure to check the castors regularly for any signs of wear and tear. - 请定期检查脚轮是否有磨损的迹象。