类型的战争
Civil wars are fought between citizens of the same country, and are fought within the country.内战发生在同一个国家的公民之间，也发生在这个国家内部。
If citizens of a country disagree about the policy or leader, they may fight a civil war.如果一个国家的公民对政策或领导人有不同意见，他们可能会打一场内战。
A world war is fought when countries form alliances, and these alliances fight each other.当国家结成联盟，而这些联盟又互相争斗时，世界大战就爆发了。
A world war involves many or most of the world's most powerful countries.世界大战涉及世界上许多或大多数最强大的国家。
There were 2 world wars in the 20th century.20世纪有两次世界大战。
Terrorism involves groups of individuals rather than countries.恐怖主义涉及个人团体胜过国家。
Terrorists may come from different countries, and they may share the same beliefs.恐怖分子可能来自不同的国家，他们可能共享相同的信仰。
Terrorists often use car-bombings and suicide attacks on innocent people.恐怖分子经常用汽车炸弹和自杀式袭击无辜的人。
A terrorist attack can happen at any time and any place.恐怖袭击随时随地都可能发生。
An invasion occurs when one country attacks another.当一个国家攻击另一个国家时，侵略就发生了。
It sends its army into the other country, and attempts to take control.它派遣军队到另一个国家并试图控制。
One of the most famous invasions was when France invaded Russia in 1812.最著名的入侵之一是1812年法国入侵俄罗斯。
A defensive war occurs when a country is attacked and needs to defend itself.当一个国家受到攻击需要自卫时，就会发生防御性战争。
Most countries have a military, so that it can defend itself if it's attacked.大多数国家都有军队，所以一旦受到攻击，军队可以自卫。
When France invaded Russia in 1812， the Russian army fought a defensive war and defeated the French army.1812年法国入侵俄国时，俄国军队打了一场防御战，打败了法国军队。
Throughout history there have been many invasions.历史上有许多侵略。
Civil wars are often fought when one part of a country wants to become an independent country.
Over 60 million people were killed in world war 2.
Sometimes two leaders will fight for power within a country and start a civil war.
