Definition: armed fighting between two or more countries or groups, or a particular example of this Level: A2
如果这个国家参战，我们将不得不面对许多人会死亡的事实。
If this country goes to ___war, we will have to face the fact that many people will die.
英国和法国在1939年向德国宣战。
Britain and France declared ___war on Germany in 1939.
核战争对人类是一个可怕的威胁。
Nuclear ___war is a terrible threat to humanity.
