Mauna Loa awoke from a 25 year silence in July 1975, filling its summit - pit crater with lava.莫纳罗亚火山在1975年7月又从沉睡了25年的状态下苏醒过来了, 山顶上的火山口充满了熔岩.The numerical model of the linear optical amplifier ( LOA ) is built based on t...
当这个婴儿最先把手伸向母亲时，他脸色一沉。His face collapses when the baby preferen-tially reaches for the mother.他把手伸向艾尔弗雷德。He put out his hand to Alfred.葡萄树已开始伸向墙外了.The vine has begun to grow away from the wall....
As the wheel turned, the potter shaped the clay.轮子一边转动，制陶工人一边拉坯。The story is told through the eyes of Inspector Simon Potter.这个故事是从西蒙·波特巡官的视角讲述的。At weekends he would potter around the garden.他周末会在花园里干些零碎活儿。...
It is still not clear who was behind Sunday's attempt to unseat the President.目前还不清楚星期天发动的企图推翻总统的行动的幕后指使人是谁。To unseat or throw off, as from a horse.使下(马);使掉下(马 )Once firms become technology leaders it is harder unse...
The material is readily prepared by reaction of formaldehyde and hydrazine.这种物质很容易由甲醛和肼反应而得到.Formaldehyde slowly inactivates many viruses.甲醛能慢慢使多种病毒失去活性.Sulfur dioxide and formaldehyde both produce irritation.二氧化硫和甲醛都可产生...