He's offered to stop off in Rome and Siena first.他曾主动表示可以先在罗马或锡耶纳停留一下.Siena's main piazza was one of the sights of Italy.锡耶纳的主要广场是意大利的名胜之一.A black cloudburst was drenching Siena at midday.中午,一场天昏地暗的暴风雨在锡耶纳上空倒下来...
Ball - type automatic balancers are employed widely in optical disk drive industry.目前在光碟机减振上应用最广泛的装置之一为滚珠型自动平衡装置.While hardware balancers may outperform software - based balancers, their flexibility is always limited.虽然硬...