No, no, no, no. A seat guide book.
不，不，是座位指南。
Valve Guide, Valve Seat, Valve Lock, Valve Spring Retainer, Casting Products.
气门导管，气门座圈，气门锁片，气门弹簧座，铸件系列。
The guide required that all passengers must wear seat belts.
导游要求所有旅客必须系安全带。
The guide required that all passengers must wear seat belts.
导游要求所有旅客必须系安全带。
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