2) They started an undeclared war.
他们不宣而战。
3) defeated without fighting
不战而败
1.
Being defeated without fighting is the largest obstacle which leads to the failure ofthe youth.
不战而败往往是导致青年人一事无成的最大障碍,而不战而败的成因又源于许许多多的错误观念。
5) collapse without a battle
不战而溃
补充资料：他们
1.代词。称自己和对方以外的若干人。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条