Declare war upon
向...宣战, 向...发动进攻, 表示反对...
🧩 词语组成解析
war
[wɔr]
n. 战争;战争期间;斗争;论战;
vi. 进行战斗，作战;同…处于交战状态;
upon
[ə'pɑn]
prep. 在…上面;当…时候;
🗣️ 情景例句
Who is it?
是谁呀？
I'm busy!
我在忙啦！
The sun was shining and the sky was crystal clear.
阳光闪烁，天空湛蓝。