"I want to hear all the gossip, all the scandal." — "You shall, dearie, you shall!"“把所有的八卦,所有的丑闻都告诉我吧。”——“好的,亲爱的,好的。”"'Accept only candy and flowers from gentlemen, dearie,'" he mimicked, and she burst into a g...
The pistons are graphite-coated to reduce friction.活塞上涂了一层石墨以减小摩擦力。Some pistons have seating rings of metal or leather.有些活塞上有金属或皮革的密封环.A pump uses valves and pistons.泵使用阀和活塞....