1. A decisive or catastrophic conflict. 
   决定性的或大规模的战争

形容词 catastrophic:

1. extremely harmful; bringing physical or financial ruin
   同义词：ruinous

1. He was out in the rain all day and this brought on a bad cold. 
   他在外面淋了一天雨, 因此患了重感冒.
2. The hot weather is bringing the wheat on nicely. 
   因天气热小麦长势良好.
3. You have brought shame and disgrace on yourself and your family. 
   你给你本人和家庭带来了耻辱.
4. The coach is bringing on some promising youngsters in the reserve team. 
   教练正在帮助後备队中有前途的年轻人提高技术.

动词 bring on:

1. cause to arise
   同义词：induce
2. bring onto the market or release
   同义词：produce, bring out
3. cause to appear

1. An active volcano may erupt at any time. 
   活火山随时可能喷发。
2. A rash has erupted all over my back. 
   我的背上出满了疹子.
3. It's many years since Mount Vesuvius last erupted. 
   维苏威火山上一次爆发至今已有很多年了.
4. The demonstration erupted into violence. 
   示威游行中突然出现了武斗.
5. Violence has erupted on the streets. 
   大街上突然发生了暴乱.

1. I had to go out sleuthing to find your address. 
   我得出去侦查一番才找到你的住址.

名词 sleuth:

1. a detective who follows a trail
   同义词：sleuth, sleuthhound

动词 sleuth:

1. watch, observe, or inquire secretly
   同义词：spy, stag, snoop, sleuth

1. The volcano poured out molten rock. 
   火山喷出了熔岩.
2. The volcano spurted (out) molten lava. 
   火山喷出了熔岩.
3. The volcano spewed molten lava. 
   火山喷出了熔岩.
4. The rock formed by the cooling and solidifying of molten rock. 
   熔岩-融化的岩石冷却凝固后形成的岩石
5. The study of the interaction of magnetic fields and electrically conducting liquids or gases, such as molten metal or plasma. 
   磁流体动力学-对磁场和导电的液体或气体，诸如熔化的金属或者等离子区之间的相互作用的研究

1. A process of rock *****ation or mineral formation brought about by the action of gases emitted from solidifying magma. 
   气成作用；气成通过从岩浆凝固中释放气体的作用下引起的岩石改变或矿物形成的过程
2. Upward pressure from underlying magma domes the surface. 
   地下岩浆的向上推力使地面成圆顶形。

词形变化:

名词 magma:

1. molten rock in the earth's crust