Pilot(operated)valve
[化] 導閥
??? 情景例句
She has now held the post of Prime Minister longer than anyone else this century.
她現在擔任首相任期之長在本世紀是前所未有的。
The abundance of money ruins youth.
錢多毀青年。
Robert was delighted to see me and equally pleased with my little gift.
羅伯特見到我很高興，對我的薄禮也感到滿意。