The silica powder toughened is an electrician filler of toughness epoxy for epikote developing.增韧硅微粉是为增韧环氧树脂而研制开发的一种电工级专用填料.Only by taking part in practice can the young people be toughened and hardened into steel.年轻人只有通...
He unveiled the picture with a ceremonious gesture.他郑重其事地为这幅画揭幕.Such a ceremonious opening, but it had nothing practical in it.把剪彩仪式搞得这么隆重, 纯粹是摆花架子.During festival, in every country, Christendom all holds ceremonious sou...