Congress is vested with the power to declare war.

国会被赋以的权利。

This invasion is tantamount to a declaration of war.

略就相当于。

The king was too precipitate in declaring war.

国王在一事上过于轻率。

China formally declared war against Japan in December 1941.

中国在1941年12月正式对日本。

To declare war against the small island state looks like the action of a cowardly nation.

向一个小小的岛国, 看来像是一个怯懦国家的行为。

Japan declared war on Germany.

日本对德国。