The volcano is inactive.这座火山已进入休止状态.The volcano was spurting out rivers of molten lava.火山喷涌着熔岩.The volcano came to life a week ago.一个星期前，火山开始变得活跃。An active volcano may erupt at any time.活火山会随时喷发。A volcano erupted and pro...
他们力求把开发周期缩至18个月以下。They aim to cut production lead times to under 18 months.密探可能会力求败坏反对派的名声。Agents provocateurs may seek to discredit the opposition.赛跑选手力求抢占起跑有利位置。The runners jockeyed for position at the start....
我们想跟孩子们一起制作硫酸铜晶体。We tried to grow some copper sulphate crystals with our children.硫酸铜具有防腐性,这是不曾有过问题的.The antiseptic properties of copper sulphate have never been questioned.铁或钢放入硫酸铜中,也会生成疏松的浸镀层.Iron or steel placed in co...